Search by property

This page provides a simple browsing interface for finding entities described by a property and a named value. Other available search interfaces include the page property search, and the ask query builder.

List of results

• File:Patent-GB-146632.pdf  + (July 12, 1920)
• File:Patent-US-1347800.pdf  + (July 27, 1920)
• File:Patent-US-1347901.pdf  + (July 27, 1920)
• File:Patent-US-1348211.pdf  + (August 3, 1920)
• File:Patent-US-1349025.pdf  + (August 10, 1920)
• File:Patent-US-1350412.pdf  + (August 24, 1920)
• File:Patent-US-1351564.pdf  + (August 31, 1920)
• File:Patent-US-1351574.pdf  + (August 31, 1920)
• File:Patent-US-1351575.pdf  + (August 31, 1920)
• File:Patent-US-1351591.pdf  + (August 31, 1920)
• File:Patent-US-1351552.pdf  + (August 31, 1920)
• File:Patent-GB-151844.pdf  + (October 7, 1920)
• File:Patent-GB-151753.pdf  + (October 7, 1920)
• File:Patent-FR-526081.pdf  + (October 7, 1920)
• File:Patent-US-1357083.pdf  + (October 26, 1920)
• File:Patent-US-1358511.pdf  + (November 9, 1920)
• File:Patent-US-1359880.pdf  + (November 23, 1920)
• File:Patent-US-D056681.pdf  + (November 23, 1920)
• File:Patent-GB-141075.pdf  + (November 25, 1920)
• File:Patent-US-1360647.pdf  + (November 30, 1920)
• File:Patent-GB-141071.pdf  + (December 9, 1920)
• File:Patent-US-1365131.pdf  + (January 11, 1921)
• File:Patent-US-1365463.pdf  + (January 11, 1921)
• File:Patent-US-1365754.pdf  + (January 18, 1921)
• File:Patent-US-1367255.pdf  + (February 1, 1921)
• File:Patent-FR-513181.pdf  + (February 9, 1921)
• File:Patent-GB-159119.pdf  + (February 11, 1921)
• File:Patent-GB-149315.pdf  + (February 17, 1921)
• File:Patent-FR-513549.pdf  + (February 17, 1921)
• File:Patent-GB-146930.pdf  + (February 24, 1921)
• File:Patent-FR-513812.pdf  + (February 24, 1921)
• File:Patent-US-D057403.pdf  + (March 15, 1921)
• File:Patent-US-D057404.pdf  + (March 15, 1921)
• File:Patent-US-D057405.pdf  + (March 15, 1921)
• File:Patent-US-1372011.pdf  + (March 22, 1921)
• File:Patent-US-D058001.pdf  + (March 24, 1921)
• File:Patent-SE-59425.pdf  + (March 30, 1921)
• File:Patent-FR-21880E.pdf  + (April 9, 1921)
• File:Patent-US-1375559.pdf  + (April 19, 1921)
• File:Patent-US-1379890.pdf  + (May 31, 1921)
• File:Patent-US-1380109.pdf  + (May 31, 1921)
• File:Patent-US-1381856.pdf  + (June 14, 1921)
• File:Patent-US-1381546.pdf  + (June 14, 1921)
• File:Patent-FR-520595.pdf  + (June 28, 1921)
• File:Patent-US-D058516.pdf  + (July 16, 1921)
• File:Patent-US-1385187.pdf  + (July 19, 1921)
• File:Patent-US-D058694.pdf  + (August 9, 1921)
• File:Patent-US-D058693.pdf  + (August 9, 1921)
• File:Patent-US-1386817.pdf  + (August 9, 1921)
• File:Patent-FR-22933E.pdf  + (September 6, 1921)
• File:Patent-FR-22935E.pdf  + (September 6, 1921)
• File:Patent-US-1390366.pdf  + (September 13, 1921)
• File:Patent-US-D059052.pdf  + (September 13, 1921)
• File:Patent-US-D059035.pdf  + (September 13, 1921)
• File:Patent-US-1391430.pdf  + (September 20, 1921)
• File:Patent-FR-526035.pdf  + (September 30, 1921)
• File:Patent-GB-147522.pdf  + (October 10, 1921)
• File:Patent-CH-91351.pdf  + (October 17, 1921)
• File:Patent-FR-527150.pdf  + (October 20, 1921)
• File:Patent-US-1395878.pdf  + (November 1, 1921)
• File:Patent-US-1395316.pdf  + (November 1, 1921)
• File:Patent-GB-171154.pdf  + (November 7, 1921)
• File:Patent-FR-528716.pdf  + (November 18, 1921)
• File:Patent-FR-529601.pdf  + (December 2, 1921)
• File:Patent-US-1402409.pdf  + (January 3, 1922)
• File:Patent-FR-531284.pdf  + (January 10, 1922)
• File:Patent-US-1406077.pdf  + (February 7, 1922)
• File:Patent-GB-175382.pdf  + (February 13, 1922)
• File:Patent-US-1407552.pdf  + (February 21, 1922)
• File:Patent-DE-349147.pdf  + (February 25, 1922)
• File:Patent-DE-349410.pdf  + (March 2, 1922)
• File:Patent-US-1408545.pdf  + (March 7, 1922)
• File:Patent-CH-93596.pdf  + (March 16, 1922)
• File:Patent-US-1411715.pdf  + (April 4, 1922)
• File:Patent-US-1415211.pdf  + (May 9, 1922)
• File:Patent-US-1419026.pdf  + (June 6, 1922)
• File:Patent-US-1420275.pdf  + (June 20, 1922)
• File:Patent-GB-182234.pdf  + (July 6, 1922)
• File:Patent-DE-356212.pdf  + (July 12, 1922)
• File:Patent-GB-182620.pdf  + (July 13, 1922)
• File:Patent-DE-356665.pdf  + (July 24, 1922)
• File:Patent-US-1423603.pdf  + (July 25, 1922)
• File:Patent-GB-184071.pdf  + (August 10, 1922)
• File:Patent-US-1425871.pdf  + (August 15, 1922)
• File:Patent-US-1426200.pdf  + (August 15, 1922)
• File:Patent-US-1426744.pdf  + (August 22, 1922)
• File:Patent-DE-357349.pdf  + (August 23, 1922)
• File:Patent-US-1428195.pdf  + (September 5, 1922)
• File:Patent-GB-185512.pdf  + (September 7, 1922)
• File:Patent-AT-89597.pdf  + (October 10, 1922)
• File:Patent-GB-186818.pdf  + (October 12, 1922)
• File:Patent-US-1434684.pdf  + (November 7, 1922)
• File:Patent-US-1435446.pdf  + (November 14, 1922)
• File:Patent-US-1437180.pdf  + (November 28, 1922)
• File:Patent-FR-25039E.pdf  + (December 14, 1922)
• File:Patent-DE-366684.pdf  + (January 9, 1923)
• File:Patent-DE-368070.pdf  + (January 31, 1923)
• File:Patent-DE-368196.pdf  + (February 1, 1923)
• File:Patent-US-1446524.pdf  + (February 27, 1923)
• File:Patent-US-1447790.pdf  + (March 6, 1923)
• File:Patent-GB-194751.pdf  + (March 16, 1923)
• File:Patent-GB-194895.pdf  + (March 22, 1923)
• File:Patent-CH-98575.pdf  + (April 2, 1923)
• File:Patent-US-1452653.pdf  + (April 24, 1923)
• File:Patent-US-1452674.pdf  + (April 24, 1923)
• File:Patent-FR-552565.pdf  + (May 3, 1923)
• File:Patent-DE-376257.pdf  + (May 26, 1923)
• File:Patent-DE-376387.pdf  + (May 28, 1923)
• File:Patent-US-1457011.pdf  + (May 29, 1923)
• File:Patent-US-1457765.pdf  + (June 5, 1923)
• File:Patent-FR-554761.pdf  + (June 16, 1923)
• File:Patent-US-1459073.pdf  + (June 19, 1923)
• File:Patent-DE-377877.pdf  + (June 28, 1923)
• File:Patent-US-1463803.pdf  + (August 7, 1923)
• File:Patent-GB-202183.pdf  + (August 16, 1923)
• File:Patent-DE-379275.pdf  + (August 18, 1923)
• File:Patent-US-1465957.pdf  + (August 28, 1923)
• File:Patent-US-1468025.pdf  + (September 18, 1923)
• File:Patent-US-1469921.pdf  + (October 9, 1923)
• File:Patent-DE-381782.pdf  + (October 11, 1923)
• File:Patent-FR-561704.pdf  + (October 26, 1923)
• File:Patent-DE-383712.pdf  + (October 30, 1923)
• File:Patent-US-1472962.pdf  + (November 6, 1923)
• File:Patent-US-1472963.pdf  + (November 6, 1923)
• File:Patent-US-1473215.pdf  + (November 6, 1923)
• File:Patent-US-1475954.pdf  + (December 4, 1923)
• File:Patent-US-1475953.pdf  + (December 4, 1923)
• File:Patent-FR-563434.pdf  + (December 5, 1923)
• File:Patent-GB-207904.pdf  + (December 13, 1923)
• File:Patent-DE-386670.pdf  + (December 20, 1923)
• File:Patent-US-1480302.pdf  + (January 8, 1924)
• File:Patent-US-1479996.pdf  + (January 8, 1924)
• File:Patent-US-1480690.pdf  + (January 15, 1924)
• File:Patent-GB-195394.pdf  + (January 24, 1924)
• File:Patent-US-1482568.pdf  + (February 5, 1924)
• File:Patent-US-1483675.pdf  + (February 12, 1924)
• File:Patent-US-1484077.pdf  + (February 19, 1924)
• File:Patent-US-1484683.pdf  + (February 26, 1924)
• File:Patent-US-1485073.pdf  + (February 26, 1924)
• File:Patent-US-1486246.pdf  + (March 11, 1924)
• File:Patent-FR-568196.pdf  + (March 18, 1924)
• File:Patent-US-1488385.pdf  + (March 25, 1924)
• File:Patent-GB-213142.pdf  + (March 27, 1924)
• File:Patent-FR-568834.pdf  + (April 2, 1924)
• File:Patent-US-1489590.pdf  + (April 8, 1924)
• File:Patent-US-1490735.pdf  + (April 15, 1924)
• File:Patent-US-1490686.pdf  + (April 15, 1924)
• File:Patent-US-1490231.pdf  + (April 15, 1924)
• File:Patent-US-1490244.pdf  + (April 15, 1924)
• File:Patent-US-1490245.pdf  + (April 15, 1924)
• File:Patent-US-1490246.pdf  + (April 15, 1924)
• File:Patent-US-1490247.pdf  + (April 15, 1924)
• File:Patent-US-1490681.pdf  + (April 15, 1924)
• File:Patent-US-1492451.pdf  + (April 29, 1924)
• File:Patent-FR-570444.pdf  + (April 30, 1924)
• File:Patent-US-1493833.pdf  + (May 13, 1924)
• File:Patent-NL-11429.pdf  + (May 16, 1924)
• File:Patent-GB-215803.pdf  + (May 21, 1924)
• File:Patent-DE-396084.pdf  + (May 23, 1924)
• File:Patent-DE-396083.pdf  + (May 23, 1924)
• File:Patent-US-1495890.pdf  + (May 27, 1924)
• File:Patent-US-1498558.pdf  + (June 24, 1924)
• File:Patent-FR-574169.pdf  + (July 7, 1924)
• File:Patent-FR-574637.pdf  + (July 16, 1924)
• File:Patent-DE-398912.pdf  + (July 26, 1924)
• File:Patent-US-1504747.pdf  + (August 12, 1924)
• File:Patent-DE-400356.pdf  + (August 19, 1924)
• File:Patent-GB-220435.pdf  + (August 21, 1924)
• File:Patent-US-1506207.pdf  + (August 26, 1924)
• File:Patent-GB-220793.pdf  + (August 28, 1924)
• File:Patent-US-1506795.pdf  + (September 2, 1924)
• File:Patent-US-1507729.pdf  + (September 9, 1924)
• File:Patent-US-1507782.pdf  + (September 9, 1924)
• File:Patent-US-1507622.pdf  + (September 9, 1924)
• File:Patent-US-1508311.pdf  + (September 9, 1924)
• File:Patent-DE-401710.pdf  + (September 9, 1924)
• File:Patent-US-1508795.pdf  + (September 16, 1924)
• File:Patent-CA-243009.pdf  + (September 16, 1924)
• File:Patent-US-D065636.pdf  + (September 23, 1924)
• File:Patent-US-1510613.pdf  + (October 7, 1924)
• File:Patent-US-1510618.pdf  + (October 7, 1924)
• File:Patent-GB-222913.pdf  + (October 8, 1924)
• File:Patent-GB-212564.pdf  + (October 9, 1924)
• File:Patent-US-1511225.pdf  + (October 14, 1924)
• File:Patent-DE-404517.pdf  + (October 20, 1924)
• File:Patent-US-1514002.pdf  + (November 4, 1924)
• File:Patent-GB-224084.pdf  + (November 6, 1924)
• File:Patent-DE-406609.pdf  + (November 25, 1924)
• File:Patent-US-1517411.pdf  + (December 2, 1924)
• File:Patent-FR-582950.pdf  + (December 31, 1924)
• File:Patent-GB-228672.pdf  + (February 12, 1925)
• File:Patent-US-1526365.pdf  + (February 17, 1925)
• File:Patent-FR-585289.pdf  + (February 24, 1925)
• File:Patent-US-1528379.pdf  + (March 3, 1925)
• File:Patent-GB-229928.pdf  + (March 5, 1925)
• File:Patent-US-D066791.pdf  + (March 17, 1925)
• File:Patent-DE-411627.pdf  + (March 28, 1925)
• File:Patent-US-1531419.pdf  + (March 31, 1925)
• File:Patent-US-1531800.pdf  + (March 31, 1925)
• File:Patent-DE-411787.pdf  + (April 2, 1925)
• File:Patent-US-1533087.pdf  + (April 14, 1925)
• File:Patent-FR-587602.pdf  + (April 21, 1925)
• File:Patent-GB-232519.pdf  + (April 23, 1925)
• File:Patent-US-1537226.pdf  + (May 12, 1925)
• File:Patent-FR-588922.pdf  + (May 18, 1925)
• File:Patent-DE-413988.pdf  + (May 20, 1925)
• File:Patent-FR-589169.pdf  + (May 25, 1925)
• File:Patent-FR-589454.pdf  + (May 29, 1925)
• File:Patent-US-1540416.pdf  + (June 2, 1925)
• File:Patent-US-1540763.pdf  + (June 9, 1925)
• File:Patent-GB-235447.pdf  + (June 18, 1925)
• File:Patent-FR-590697.pdf  + (June 20, 1925)
• File:Patent-US-1544161.pdf  + (June 30, 1925)
• File:Patent-GB-225200.pdf  + (July 23, 1925)
• File:Patent-FR-592156.pdf  + (July 28, 1925)
• File:Patent-GB-237472.pdf  + (July 30, 1925)
• File:Patent-GB-238288.pdf  + (August 12, 1925)
• File:Patent-GB-238110.pdf  + (August 13, 1925)
• File:Patent-US-RE16145.pdf  + (August 18, 1925)
• File:Patent-FR-593376.pdf  + (August 21, 1925)
• File:Patent-US-1551604.pdf  + (September 1, 1925)
• File:Patent-US-1551601.pdf  + (September 1, 1925)
• File:Patent-GB-239274.pdf  + (September 2, 1925)
• File:Patent-FR-594143.pdf  + (September 7, 1925)
• File:Patent-DE-418471.pdf  + (September 10, 1925)
• File:Patent-US-1554604.pdf  + (September 22, 1925)
• File:Patent-US-1555407.pdf  + (September 29, 1925)
• File:Patent-US-1556701.pdf  + (October 13, 1925)
• File:Patent-FR-595963.pdf  + (October 13, 1925)
• File:Patent-US-1557357.pdf  + (October 13, 1925)
• File:Patent-US-1558553.pdf  + (October 27, 1925)
• File:Patent-US-1560485.pdf  + (November 3, 1925)
• File:Patent-CA-255206.pdf  + (November 3, 1925)
• File:Patent-US-1561590.pdf  + (November 17, 1925)
• File:Patent-US-1562267.pdf  + (November 17, 1925)
• File:Patent-GB-243110.pdf  + (November 26, 1925)
• File:Patent-US-1567823.pdf  + (December 29, 1925)
• File:Patent-US-1567824.pdf  + (December 29, 1925)
• File:Patent-FR-598504.pdf  + (December 29, 1925)
• File:Patent-US-1567059.pdf  + (December 29, 1925)
• File:Patent-US-1569783.pdf  + (January 12, 1926)
• File:Patent-GB-247038.pdf  + (February 11, 1926)
• File:Patent-US-1574266.pdf  + (February 23, 1926)
• File:Patent-US-D069499.pdf  + (February 23, 1926)
• File:Patent-US-1574457.pdf  + (February 23, 1926)
• File:Patent-US-1574919.pdf  + (March 2, 1926)
• File:Patent-US-1574929.pdf  + (March 2, 1926)
• File:Patent-US-1574930.pdf  + (March 2, 1926)
• File:Patent-FR-601664.pdf  + (March 5, 1926)
• File:Patent-US-1576588.pdf  + (March 16, 1926)
• File:Patent-GB-265005.pdf  + (March 16, 1926)

• File:Patent-US-1577548.pdf  + (March 23, 1926)
• File:Patent-US-1577646.pdf  + (March 23, 1926)

• File:Patent-US-1578565.pdf  + (March 30, 1926)
• File:Patent-US-1580093.pdf  + (April 6, 1926)
• File:Patent-FR-603093.pdf  + (April 8, 1926)
• File:Patent-US-1583579.pdf  + (May 4, 1926)
• File:Patent-US-RE16349.pdf  + (May 11, 1926)
• File:Patent-US-1585805.pdf  + (May 25, 1926)
• File:Patent-US-1586541.pdf  + (June 1, 1926)
• File:Patent-DE-430024.pdf  + (June 9, 1926)
• File:Patent-DE-430677.pdf  + (June 19, 1926)
• File:Patent-DE-430661.pdf  + (June 21, 1926)
• File:Patent-US-D070575.pdf  + (July 13, 1926)
• File:Patent-US-1594319.pdf  + (July 27, 1926)
• File:Patent-US-1594740.pdf  + (August 3, 1926)
• File:Patent-GB-245448.pdf  + (August 3, 1926)
• File:Patent-US-1596811.pdf  + (August 17, 1926)
• File:Patent-US-1596722.pdf  + (August 17, 1926)
• File:Patent-US-D070959.pdf  + (August 31, 1926)
• File:Patent-FR-610369.pdf  + (September 4, 1926)
• File:Patent-FR-610947.pdf  + (September 16, 1926)
• File:Patent-US-1600293.pdf  + (September 21, 1926)
• File:Patent-US-1602055.pdf  + (October 5, 1926)
• File:Patent-US-1604906.pdf  + (October 26, 1926)
• File:Patent-US-1605151.pdf  + (November 2, 1926)
• File:Patent-US-1607048.pdf  + (November 16, 1926)
• File:Patent-US-1606930.pdf  + (November 16, 1926)
• File:Patent-US-1608707.pdf  + (November 30, 1926)
• File:Patent-DE-437904.pdf  + (December 3, 1926)
• File:Patent-FR-614071.pdf  + (December 6, 1926)
• File:Patent-US-1609567.pdf  + (December 7, 1926)
• File:Patent-US-1609387.pdf  + (December 7, 1926)
• File:Patent-US-1610185.pdf  + (December 7, 1926)
• File:Patent-US-1610275.pdf  + (December 14, 1926)
• File:Patent-IT-5573-1927.pdf  + (1927)
• File:Patent-US-1613812.pdf  + (January 11, 1927)
• File:Patent-US-1613810.pdf  + (January 11, 1927)
• File:Patent-US-1613804.pdf  + (January 11, 1927)
• File:Patent-US-1613811.pdf  + (January 11, 1927)
• File:Patent-US-1614606.pdf  + (January 18, 1927)
• File:Patent-DE-440614.pdf  + (February 5, 1927)
• File:Patent-US-D071994.pdf  + (February 15, 1927)
• File:Patent-FR-617418.pdf  + (February 19, 1927)
• File:Patent-US-1620529.pdf  + (March 8, 1927)
• File:Patent-US-1622316.pdf  + (March 29, 1927)
• File:Patent-US-1624554.pdf  + (April 12, 1927)
• File:Patent-US-1624190.pdf  + (April 12, 1927)
• File:Patent-US-1624194.pdf  + (April 12, 1927)
• File:Patent-GB-269614.pdf  + (April 19, 1927)
• File:Patent-DE-443893.pdf  + (May 12, 1927)
• File:Patent-GB-270915.pdf  + (May 19, 1927)
• File:Patent-US-1629987.pdf  + (May 24, 1927)
• File:Patent-GB-273357.pdf  + (June 7, 1927)
• File:Patent-FR-628272.pdf  + (June 7, 1927)
• File:Patent-US-1632371.pdf  + (June 14, 1927)
• File:Patent-US-1633111.pdf  + (June 21, 1927)
• File:Patent-FR-623258.pdf  + (June 21, 1927)
• File:Patent-US-1633896.pdf  + (June 28, 1927)
• File:Patent-US-1634618.pdf  + (July 5, 1927)
• File:Patent-DE-447802.pdf  + (July 29, 1927)
• File:Patent-DE-447572.pdf  + (July 30, 1927)
• File:Patent-US-1641096.pdf  + (August 30, 1927)
• File:Patent-US-1641829.pdf  + (September 6, 1927)
• File:Patent-US-1641846.pdf  + (September 6, 1927)
• File:Patent-US-1641949.pdf  + (September 6, 1927)
• File:Patent-US-D073416.pdf  + (September 6, 1927)
• File:Patent-FR-626665.pdf  + (September 16, 1927)
• File:Patent-FR-626975.pdf  + (September 23, 1927)
• File:Patent-US-1645167.pdf  + (October 11, 1927)
• File:Patent-US-1647093.pdf  + (October 25, 1927)
• File:Patent-US-1647882.pdf  + (November 1, 1927)
• File:Patent-US-1648545.pdf  + (November 8, 1927)
• File:Patent-US-1648544.pdf  + (November 8, 1927)
• File:Patent-DE-441349.pdf  + (November 11, 1927)
• File:Patent-US-1653151.pdf  + (December 20, 1927)
• File:Patent-IT-6253-1928.pdf  + (1928)
• File:Patent-US-D074242.pdf  + (January 10, 1928)
• File:Patent-GB-283677.pdf  + (January 19, 1928)
• File:Patent-US-1657033.pdf  + (January 24, 1928)
• File:Patent-US-1658940.pdf  + (January 24, 1928)
• File:Patent-GB-284412.pdf  + (February 1, 1928)
• File:Patent-GB-284529.pdf  + (February 2, 1928)
• File:Patent-US-1658147.pdf  + (February 7, 1928)
• File:Patent-US-1661225.pdf  + (March 6, 1928)
• File:Patent-DE-457462.pdf  + (March 16, 1928)
• File:Patent-FR-636029.pdf  + (March 30, 1928)
• File:Patent-GB-289969.pdf  + (May 7, 1928)
• File:Patent-US-1669036.pdf  + (May 8, 1928)
• File:Patent-US-1669040.pdf  + (May 8, 1928)
• File:Patent-US-1669714.pdf  + (May 15, 1928)
• File:Patent-US-1671125.pdf  + (May 29, 1928)
• File:Patent-GB-291607.pdf  + (June 7, 1928)
• File:Patent-US-1674259.pdf  + (June 19, 1928)
• File:Patent-US-1674260.pdf  + (June 19, 1928)
• File:Patent-US-1674261.pdf  + (June 19, 1928)
• File:Patent-FR-639313.pdf  + (June 19, 1928)
• File:Patent-FR-639606.pdf  + (June 26, 1928)
• File:Patent-US-1675543.pdf  + (July 3, 1928)
• File:Patent-US-1675826.pdf  + (July 3, 1928)
• File:Patent-US-1681954.pdf  + (August 28, 1928)
• File:Patent-GB-297194.pdf  + (September 20, 1928)
• File:Patent-FR-33407E.pdf  + (September 28, 1928)
• File:Patent-DE-466010.pdf  + (September 29, 1928)
• File:Patent-GB-288176.pdf  + (October 18, 1928)
• File:Patent-DE-467712.pdf  + (October 27, 1928)
• File:Patent-US-D076794.pdf  + (November 6, 1928)
• File:Patent-DE-468697.pdf  + (November 26, 1928)
• File:Patent-US-1694945.pdf  + (December 11, 1928)
• File:Patent-GB-302015.pdf  + (December 13, 1928)
• File:Patent-CH-130454.pdf  + (December 15, 1928)
• File:Patent-US-1696183.pdf  + (December 25, 1928)
• File:Patent-US-1696218.pdf  + (December 25, 1928)
• File:Patent-IT-4572-1929.pdf  + (1929)
• File:Patent-GB-303699.pdf  + (January 10, 1929)
• File:Patent-GB-304922.pdf  + (January 31, 1929)
• File:Patent-US-1704470.pdf  + (March 5, 1929)
• File:Patent-FR-653061.pdf  + (March 16, 1929)
• File:Patent-US-1705656.pdf  + (March 19, 1929)
• File:Patent-US-1706616.pdf  + (March 26, 1929)
• File:Patent-US-1706662.pdf  + (March 26, 1929)
• File:Patent-US-1706751.pdf  + (March 26, 1929)
• File:Patent-US-1708671.pdf  + (April 9, 1929)
• File:Patent-US-RE17282.pdf  + (April 23, 1929)
• File:Patent-US-1712304.pdf  + (May 7, 1929)
• File:Patent-US-1712850.pdf  + (May 14, 1929)
• File:Patent-US-1714418.pdf  + (May 21, 1929)
• File:Patent-FR-657681.pdf  + (May 25, 1929)
• File:Patent-US-1717001.pdf  + (June 11, 1929)
• File:Patent-US-D078795.pdf  + (June 17, 1929)
• File:Patent-US-D078794.pdf  + (June 17, 1929)
• File:Patent-US-D078777.pdf  + (June 18, 1929)
• File:Patent-US-1720471.pdf  + (July 9, 1929)
• File:Patent-US-1719895.pdf  + (July 9, 1929)
• File:Patent-US-1720717.pdf  + (July 16, 1929)
• File:Patent-DE-480844.pdf  + (August 10, 1929)
• File:Patent-DE-481237.pdf  + (August 16, 1929)
• File:Patent-US-1724106.pdf  + (September 13, 1929)
• File:Patent-US-1724107.pdf  + (September 13, 1929)
• File:Patent-US-D079456.pdf  + (September 24, 1929)
• File:Patent-AT-114699.pdf  + (October 25, 1929)
• File:Patent-US-1733780.pdf  + (October 29, 1929)
• File:Patent-US-D079691.pdf  + (October 29, 1929)
• File:Patent-FR-35030E.pdf  + (October 30, 1929)
• File:Patent-DE-485584.pdf  + (November 4, 1929)
• File:Patent-GB-321309.pdf  + (November 7, 1929)
• File:Patent-US-1735224.pdf  + (November 12, 1929)
• File:Patent-US-1735199.pdf  + (November 12, 1929)
• File:Patent-US-1737463.pdf  + (November 26, 1929)
• File:Patent-US-1737948.pdf  + (December 3, 1929)
• File:Patent-FR-670953.pdf  + (December 6, 1929)
• File:Patent-FR-671838.pdf  + (December 19, 1929)
• File:Patent-GB-323129.pdf  + (December 24, 1929)
• File:Patent-FR-672361.pdf  + (December 27, 1929)
• File:Patent-AT-115523.pdf  + (December 27, 1929)
• File:Patent-US-1741368.pdf  + (December 31, 1929)
• File:Patent-IT-291022.pdf  + (1930)
• File:Patent-IT-291838.pdf  + (1930)
• File:Patent-US-D080362.pdf  + (January 21, 1930)
• File:Patent-GB-318982.pdf  + (January 23, 1930)
• File:Patent-US-1745483.pdf  + (February 4, 1930)
• File:Patent-FR-675368.pdf  + (February 10, 1930)
• File:Patent-US-1749037.pdf  + (March 4, 1930)
• File:Patent-US-1750410.pdf  + (March 11, 1930)
• File:Patent-US-D081254.pdf  + (March 27, 1930)
• File:Patent-US-1755586.pdf  + (April 22, 1930)
• File:Patent-FR-36278E.pdf  + (April 30, 1930)
• File:Patent-GB-312180.pdf  + (May 1, 1930)
• File:Patent-US-1758199.pdf  + (May 13, 1930)
• File:Patent-US-D081248.pdf  + (May 27, 1930)
• File:Patent-US-D081223.pdf  + (May 27, 1930)
• File:Patent-US-D081246.pdf  + (May 27, 1930)
• File:Patent-US-D081247.pdf  + (May 27, 1930)
• File:Patent-US-1762103.pdf  + (June 3, 1930)
• File:Patent-US-1762104.pdf  + (June 3, 1930)
• File:Patent-GB-330144.pdf  + (June 5, 1930)
• File:Patent-GB-330009.pdf  + (June 5, 1930)
• File:Patent-GB-330010.pdf  + (June 5, 1930)
• File:Patent-DE-497949.pdf  + (June 13, 1930)
• File:Patent-DE-499497.pdf  + (June 13, 1930)
• File:Patent-US-D081435.pdf  + (June 24, 1930)
• File:Patent-US-1767189.pdf  + (June 24, 1930)
• File:Patent-FR-686153.pdf  + (July 23, 1930)
• File:Patent-US-D081742.pdf  + (August 5, 1930)
• File:Patent-US-1772000.pdf  + (August 5, 1930)
• File:Patent-US-D081741.pdf  + (August 5, 1930)
• File:Patent-DE-504867.pdf  + (August 8, 1930)
• File:Patent-US-1772608.pdf  + (August 12, 1930)
• File:Patent-DE-505420.pdf  + (August 18, 1930)
• File:Patent-US-1773475.pdf  + (August 19, 1930)
• File:Patent-US-1775068.pdf  + (September 2, 1930)
• File:Patent-GB-334913.pdf  + (September 12, 1930)
• File:Patent-FR-690093.pdf  + (September 16, 1930)
• File:Patent-US-1776384.pdf  + (September 23, 1930)
• File:Patent-DE-508058.pdf  + (September 24, 1930)
• File:Patent-US-1777736.pdf  + (October 7, 1930)
• File:Patent-GB-336190.pdf  + (October 9, 1930)
• File:Patent-US-D082341.pdf  + (October 21, 1930)
• File:Patent-FR-691384.pdf  + (October 21, 1930)
• File:Patent-GB-336878.pdf  + (October 23, 1930)
• File:Patent-US-1779836.pdf  + (October 28, 1930)
• File:Patent-DE-511708.pdf  + (November 1, 1930)
• File:Patent-US-1780527.pdf  + (November 4, 1930)
• File:Patent-GB-337794.pdf  + (November 10, 1930)
• File:Patent-GB-337835.pdf  + (November 10, 1930)
• File:Patent-FR-692937.pdf  + (November 13, 1930)
• File:Patent-FR-693093.pdf  + (November 14, 1930)
• File:Patent-US-1782108.pdf  + (November 18, 1930)
• File:Patent-US-1782109.pdf  + (November 18, 1930)
• File:Patent-US-1782597.pdf  + (November 25, 1930)
• File:Patent-US-1783630.pdf  + (December 2, 1930)
• File:Patent-US-1783734.pdf  + (December 2, 1930)
• File:Patent-US-1784078.pdf  + (December 9, 1930)
• File:Patent-FR-695834.pdf  + (December 9, 1930)
• File:Patent-GB-345564.pdf  + (December 9, 1930)
• File:Patent-FR-695784.pdf  + (December 22, 1930)
• File:Patent-US-D082897.pdf  + (December 23, 1930)
• File:Patent-US-1787406.pdf  + (December 30, 1930)
• File:Patent-FR-696838.pdf  + (January 7, 1931)
• File:Patent-US-1789522.pdf  + (January 20, 1931)
• File:Patent-US-1790037.pdf  + (January 27, 1931)
• File:Patent-FR-698700.pdf  + (February 3, 1931)
• File:Patent-US-1791776.pdf  + (February 10, 1931)
• File:Patent-US-1793824.pdf  + (February 24, 1931)
• File:Patent-US-1794154.pdf  + (February 24, 1931)
• File:Patent-US-1793610.pdf  + (February 24, 1931)
• File:Patent-US-1793910.pdf  + (February 24, 1931)
• File:Patent-FR-700497.pdf  + (March 2, 1931)
• File:Patent-US-D080609.pdf  + (March 4, 1931)
• File:Patent-US-D083592.pdf  + (March 10, 1931)
• File:Patent-US-D083591.pdf  + (March 10, 1931)
• File:Patent-FR-701215.pdf  + (March 13, 1931)
• File:Patent-US-D083673.pdf  + (March 17, 1931)
• File:Patent-US-1798046.pdf  + (March 24, 1931)
• File:Patent-GB-326242.pdf  + (March 24, 1931)
• File:Patent-GB-345712.pdf  + (April 2, 1931)
• File:Patent-US-1800425.pdf  + (April 14, 1931)
• File:Patent-US-1800330.pdf  + (April 14, 1931)
• File:Patent-US-D083908.pdf  + (April 14, 1931)
• File:Patent-US-1801635.pdf  + (April 21, 1931)
• File:Patent-US-1801310.pdf  + (April 21, 1931)
• File:Patent-CH-146581.pdf  + (April 30, 1931)
• File:Patent-GB-347540.pdf  + (April 30, 1931)
• File:Patent-GB-348036.pdf  + (May 5, 1931)
• File:Patent-US-1804522.pdf  + (May 12, 1931)
• File:Patent-US-D084146.pdf  + (May 12, 1931)
• File:Patent-US-1807415.pdf  + (May 26, 1931)
• File:Patent-US-D084249.pdf  + (May 26, 1931)
• File:Patent-US-1807227.pdf  + (May 26, 1931)
• File:Patent-US-1808045.pdf  + (June 1, 1931)
• File:Patent-US-1809416.pdf  + (June 9, 1931)
• File:Patent-US-1808779.pdf  + (June 9, 1931)