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Elenco dei risultati
- File:Patent-US-607397.pdf + (Lewis E. Waterman)
- File:Patent-US-607399.pdf + (Lewis E. Waterman)
- File:Patent-US-607400.pdf + (Lewis E. Waterman)
- File:Patent-US-607401.pdf + (Lewis E. Waterman)
- File:Patent-US-698881.pdf + (Lewis E. Waterman)
- File:Patent-US-698882.pdf + (Lewis E. Waterman)
- File:Patent-US-1484683.pdf + (Lewis M. Tebbel)
- File:Patent-US-1301317.pdf + (Lillian Plancher)
- File:Patent-FR-628272.pdf + (Lionel Gunsberg)
- File:Patent-GB-273357.pdf + (Lionel Gunsberg)
- File:Patent-GB-406073.pdf + (Lionel Gunsberg)
- File:Patent-US-2040999.pdf + (Lloyd A. Kelley)
- File:Patent-US-1457765.pdf + (Louis Badois)
- File:Patent-CH-98575.pdf + (Louis Badois)
- File:Patent-GB-186818.pdf + (Louis Badois)
- File:Patent-GB-175382.pdf + (Louis Badois)
- File:Patent-GB-212564.pdf + (Louis Badois)
- File:Patent-GB-225200.pdf + (Louis Badois)
- File:Patent-DE-440614.pdf + (Louis Badois)
- File:Patent-FR-25039E.pdf + (Louis Badois)
- File:Patent-FR-527150.pdf + (Louis Badois)
- File:Patent-FR-574637.pdf + (Louis Badois)
- File:Patent-FR-623258.pdf + (Louis Badois)
- File:Patent-FR-764787.pdf + (Louis Badois)
- File:Patent-US-1882644.pdf + (Louis H. Juster)
- File:Patent-US-2002092.pdf + (Louis H. Juster)
- File:Patent-US-D094983.pdf + (Louis Morrison)
- File:Patent-US-D082897.pdf + (Louis Morrison)
- File:Patent-US-D124609.pdf + (Louis Morrison)
- File:Patent-US-D155532.pdf + (Louis Morrison)
- File:Patent-US-D083908.pdf + (Louis Morrison)
- File:Patent-US-D082341.pdf + (Louis Morrison)
- File:Patent-US-1673579.pdf + (Louis Morrison)
- File:Patent-FR-734996.pdf + (Lous Moratille)
- File:Patent-FR-921485.pdf + (Lucien Claret)
- File:Patent-US-2538294.pdf + (Lucien Claret)
- File:Patent-CH-254826.pdf + (Lucien Claret)
- File:Patent-GB-612867.pdf + (Lucien Claret)
- File:Patent-BE-465193.pdf + (Lucien Claret)
- File:Patent-FR-925385.pdf + (Lucien Claret)
- File:Patent-GB-612868.pdf + (Lucien Claret)
- File:Patent-CH-255121.pdf + (Lucien Claret)
- File:Patent-BE-465190.pdf + (Lucien Claret)
- File:Patent-GB-612869.pdf + (Lucien Claret)
- File:Patent-CH-251140.pdf + (Lucien Claret)
- File:Patent-BE-465191.pdf + (Lucien Claret)
- File:Patent-GB-612870.pdf + (Lucien Claret)
- File:Patent-FR-925384.pdf + (Lucien Claret)
- File:Patent-BE-465192.pdf + (Lucien Claret)
- File:Patent-US-2519635.pdf + (Lucien Claret)
- File:Patent-FR-57796E.pdf + (Lucien Claret)
- File:Patent-US-19613.pdf + (Lucien E. Hicks)
- File:Patent-US-38863.pdf + (Lucien E. Hicks)
- File:Patent-US-1822168.pdf + (Lucifer J. Most)
- File:Patent-US-1968567.pdf + (Lucifer J. Most)
- File:Patent-US-1822167.pdf + (Lucifer J. Most)
- File:Patent-US-1551604.pdf + (Lucifer J. Most)
- File:Patent-US-1822166.pdf + (Lucifer J. Most)
- File:Patent-US-1675826.pdf + (Walter A. Sheaffer)
- File:Patent-US-1758199.pdf + (Lucifer J. Most)
- File:Patent-US-1809985.pdf + (Lucifer J. Most)
- File:Patent-US-1420275.pdf + (Lucifer J. Most)
- File:Patent-US-1940223.pdf + (Lucifer J. Most)
- File:Patent-US-2154102.pdf + (Lucifer J. Most)
- File:Patent-US-2154103.pdf + (Lucifer J. Most)
- File:Patent-US-2127043.pdf + (Lucifer J. Most)
- File:Patent-US-1195709.pdf + (Lucifer J. Most)
- File:Patent-US-1989351.pdf + (Lucius A. Crowell)
- File:Patent-US-2283333.pdf + (Lynn P. Martin)
- File:Patent-US-2215630.pdf + (Howard S. Wright)
- File:Patent-US-2241865.pdf + (Lynn P. Martin)
- File:Patent-US-2249616.pdf + (Lynn P. Martin)
- File:Patent-US-2303373.pdf + (Lynn P. Martin)
- File:Patent-US-2303374.pdf + (Lynn P. Martin)
- File:Patent-US-2473688.pdf + (Lynn P. Martin)
- File:Patent-US-2473690.pdf + (Wilbur K. Olson)
- File:Patent-US-2610612.pdf + (Lynn P. Martin)
- File:Patent-US-2553598.pdf + (Lynn P. Martin)
- File:Patent-US-2553599.pdf + (Lynn P. Martin)
- File:Patent-US-2769427.pdf + (Lynn P. Martin)
- File:Patent-US-2610611.pdf + (Lynn P. Martin)
- File:Patent-US-2799246.pdf + (Lynn P. Martin)
- File:Patent-US-2799247.pdf + (Lynn P. Martin)
- File:Patent-US-2802449.pdf + (Lynn P. Martin)
- File:Patent-US-2914028.pdf + (Lynn P. Martin)
- File:Patent-US-2949887.pdf + (Lynn P. Martin)
- File:Patent-US-2949888.pdf + (Lynn P. Martin)
- File:Patent-US-D188265.pdf + (William E. Bunn)
- File:Patent-US-D188266.pdf + (William E. Bunn)
- File:Patent-US-D188267.pdf + (William E. Bunn)
- File:Patent-US-D131000.pdf + (Lynn P. Martin)
- File:Patent-US-D142390.pdf + (Wilbur K. Olson)
- File:Patent-US-D142383.pdf + (Lynn P. Martin)
- File:Patent-US-D130998.pdf + (Lynn P. Martin)
- File:Patent-US-D130999.pdf + (Lynn P. Martin)
- File:Patent-US-D142391.pdf + (Wilbur K. Olson)
- File:Patent-US-D130997.pdf + (Lynn P. Martin)
- File:Patent-US-D142384.pdf + (Lynn P. Martin)
- File:Patent-FR-950038.pdf + (Léon-Victor Roussel)
- File:Patent-US-848023.pdf + (M L Z Fuller)
- File:Patent-US-2208460.pdf + (David Kahn)
- File:Patent-US-D151989.pdf + (Mahlon Edward Hirsch)
- File:Patent-DE-879811.pdf + (Manfred Fischer)
- File:Patent-US-RE23683.pdf + (Mario Segre)
- File:Patent-US-2603189.pdf + (Mario Segre)
- File:Patent-US-1825090.pdf + (Marion O. Reis)
- File:Patent-US-1016166.pdf + (Marius Marcucci)
- File:Patent-US-1920409.pdf + (William H. Lindemon)
- File:Patent-GB-619349.pdf + (Mark Sydney Finburgh)
- File:Patent-GB-420064.pdf + (Mark Sydney Finburgh)
- File:Patent-GB-416648.pdf + (Mark Sydney Finburgh)
- File:Patent-GB-581290.pdf + (Mark Sydney Finburgh)
- File:Patent-DE-645085.pdf + (Mark Sydney Finburgh)
- File:Patent-FR-792631.pdf + (Mark Sydney Finburgh)
- File:Patent-BE-410533.pdf + (Mark Sydney Finburgh)
- File:Patent-GB-580628.pdf + (Mark Sydney Finburgh)
- File:Patent-US-2223541.pdf + (Marlin S. Baker)
- File:Patent-US-2387001.pdf + (Marlin S. Baker)
- File:Patent-US-2528327.pdf + (Marlin S. Baker)
- File:Patent-US-2278907.pdf + (Marlin S. Baker)
- File:Patent-US-2612867.pdf + (Marlin S. Baker)
- File:Patent-US-2619070.pdf + (Marlin S. Baker)
- File:Patent-US-D116098.pdf + (Kenneth S. Parker)
- File:Patent-US-D116097.pdf + (Kenneth S. Parker)
- File:Patent-US-2267147.pdf + (Marlin S. Baker)
- File:Patent-US-2286878.pdf + (Ivan D. Tefft)
- File:Patent-US-2403039.pdf + (Marlin S. Baker)
- File:Patent-US-2503080.pdf + (Ivan D. Tefft)
- File:Patent-US-2528328.pdf + (Marlin S. Baker)
- File:Patent-US-2533082.pdf + (Marlin S. Baker)
- File:Patent-US-2871823.pdf + (Marlin S. Baker)
- File:Patent-US-2905148.pdf + (Marlin S. Baker)
- File:Patent-US-D179053.pdf + (Marlin S. Baker)
- File:Patent-US-1268206.pdf + (Martin Borbeck)
- File:Patent-US-1342736.pdf + (Martin Borbeck)
- File:Patent-US-D252464.pdf + (Elmer D. Thompson)
- File:Patent-US-255205.pdf + (Marvin C. Stone)
- File:Patent-US-1402409.pdf + (Marx Finstone)
- File:Patent-US-1576588.pdf + (Marx Finstone)
- File:Patent-US-1610275.pdf + (Marx Finstone)
- File:Patent-US-1411715.pdf + (Marx Finstone)
- File:Patent-US-1648545.pdf + (Marx Finstone)
- File:Patent-US-1648544.pdf + (Marx Finstone)
- File:Patent-US-1238657.pdf + (Marx Finstone)
- File:Patent-GB-265005.pdf + (Marx Finstone)
- File:Patent-US-D143049.pdf + (Maurice J. Waldinger)
- File:Patent-GB-191101051.pdf + (Edmund Moster)
- File:Patent-GB-191210727.pdf + (Edmund Moster)
- File:Patent-GB-190814947.pdf + (Edmund Moster)
- File:Patent-FR-395879.pdf + (Edmund Moster)
- File:Patent-AT-38995.pdf + (Edmund Moster)
- File:Patent-CH-45651.pdf + (Edmund Moster)
- File:Patent-AT-56132B.pdf + (Edmund Moster)
- File:Patent-AT-63461B.pdf + (Edmund Moster)
- File:Patent-FR-423826.pdf + (Edmund Moster)
- File:Patent-FR-15507E.pdf + (Edmund Moster)
- File:Patent-US-1826246.pdf + (Max Heerklotz)
- File:Patent-US-2617387.pdf + (Max Knobel)
- File:Patent-US-D095860.pdf + (Max M. Neuhoff)
- File:Patent-US-D163686.pdf + (Mendel Fried)
- File:Patent-US-1917185.pdf + (Milford G. Sypher)
- File:Patent-US-2017109.pdf + (Milford G. Sypher)
- File:Patent-US-2089449.pdf + (Milford G. Sypher)
- File:Patent-US-2102044.pdf + (Milford G. Sypher)
- File:Patent-US-2118241.pdf + (Milford G. Sypher)
- File:Patent-US-2139045.pdf + (Milford G. Sypher)
- File:Patent-US-D100970.pdf + (Milford G. Sypher)
- File:Patent-US-D105150.pdf + (Milford G. Sypher)
- File:Patent-US-D095938.pdf + (Milford G. Sypher)
- File:Patent-US-2152161.pdf + (Milford G. Sypher)
- File:Patent-US-2318977.pdf + (Milford G. Sypher)
- File:Patent-US-1391430.pdf + (Milton C. Taylor)
- File:Patent-US-2254975.pdf + (Milton R. Pickus)
- File:Patent-US-2328580.pdf + (Milton R. Pickus)
- File:Patent-US-D143508.pdf + (Milton Reynolds)
- File:Patent-US-D145586.pdf + (Milton Reynolds)
- File:Patent-US-1893130.pdf + (Mirko Chelazzi)
- File:Patent-GB-397736.pdf + (Mirko Chelazzi)
- File:Patent-FR-728038.pdf + (Mirko Chelazzi)
- File:Patent-US-2807237.pdf + (David Kahn)
- File:Patent-US-1780527.pdf + (Morris Kolber)
- File:Patent-US-2811948.pdf + (David Kahn)
- File:Patent-US-2964012.pdf + (Julius M. Kahn)
- File:Patent-US-2951465.pdf + (Karl Weisser)
- File:Patent-US-2237155.pdf + (Morris M. Malis)
- File:Patent-US-567151.pdf + (Morris W. Moore)
- File:Patent-US-501895.pdf + (Morris W. Moore)
- File:Patent-US-567152.pdf + (Morris W. Moore)
- File:Patent-US-939057.pdf + (Morris W. Moore)
- File:Patent-US-874897.pdf + (Morris W. Moore)
- File:Patent-FR-378822.pdf + (Morris W. Moore)
- File:Patent-US-1220875.pdf + (Morris W. Moore)
- File:Patent-US-1031282.pdf + (Morris W. Moore)
- File:Patent-US-856082.pdf + (Morris W. Moore)
- File:Patent-NL-81874.pdf + (N. V. Vulpenhouderfabriek "Union")
- File:Patent-BE-536146.pdf + (N. V. Vulpenhouderfabriek "Union")
- File:Patent-FR-1119961.pdf + (N. V. Vulpenhouderfabriek Union)
- File:Patent-US-1853876.pdf + (Kenneth S. Parker)
- File:Patent-US-2037177.pdf + (Nathan W. Paquette)
- File:Patent-US-2124771.pdf + (Ned D. Fish)
- File:Patent-US-D144358.pdf + (Ned D. Fish)
- File:Patent-US-D142381.pdf + (Ned T. Fish)
- File:Patent-US-D142382.pdf + (Ned T. Fish)
- File:Patent-US-D111301.pdf + (Ned T. Fish)
- File:Patent-DE-238294.pdf + (Nicolaus Assmann)
- File:Patent-US-1457875.pdf + (Noel H. Coates)
- File:Patent-US-2699147.pdf + (Nolan Kent Rhoades)
- File:Patent-US-2708904.pdf + (Nolan Kent Rhoades)
- File:Patent-US-2737927.pdf + (Nolan Kent Rhoades)
- File:Patent-US-2773479.pdf + (Nolan Kent Rhoades)
- File:Patent-US-2916013.pdf + (Nolan Kent Rhoades)
- File:Patent-US-D169456.pdf + (Nolan Kent Rhoades)
- File:Patent-FR-1076270.pdf + (Nolan Kent Rhoades)
- File:Patent-US-428969.pdf + (Norman C. Stiles)
- File:Patent-US-2316478.pdf + (Norman E. Weigel)
- File:Patent-US-1989220.pdf + (Norman E. Weigel)
- File:Patent-US-2305287.pdf + (Norman E. Weigel)
- File:Patent-US-2316479.pdf + (Norman E. Weigel)
- File:Patent-US-2328116.pdf + (Norman E. Weigel)
- File:Patent-US-D095882.pdf + (Norman E. Weigel)
- File:Patent-US-D149921.pdf + (Norman E. Weigel)
- File:Patent-US-D174667.pdf + (Norman E. Weigel)
- File:Patent-US-2690739.pdf + (Norman E. Weigel)
- File:Patent-US-D135498.pdf + (Norman E. Weigel)
- File:Patent-US-2335223.pdf + (Norman E. Weigel)
- File:Patent-US-2232231.pdf + (O'Cal Hanson)
- File:Patent-US-D140026.pdf + (Peter Schladermundt)
- File:Patent-US-1283860.pdf + (Oliver Mitchell)
- File:Patent-US-634013.pdf + (Oliver R. Mitchell)
- File:Patent-US-1696218.pdf + (George E. Sweetnam)
- File:Patent-CH-250922.pdf + (Orlando Quadretti)
- File:Patent-FR-923799.pdf + (Orlando Quadretti)
- File:Patent-IT-378835.pdf + (Orlando Quadretti)
- File:Patent-US-2362905.pdf + (Orville E. Kuhlman)
- File:Patent-US-1486246.pdf + (Oscar B. Hjorth)
- File:Patent-US-1669036.pdf + (Horace L. Blackman)
- File:Patent-US-1634618.pdf + (Oscar B. Hjorth)
- File:Patent-GB-185512.pdf + (Harold Ashley Stevens)
- File:Patent-US-1853316.pdf + (Oscar F. Nilsson)
- File:Patent-US-1902091.pdf + (Oscar F. Nilsson)
- File:Patent-US-1818216.pdf + (Oscar Federbusch)
- File:Patent-US-2104676.pdf + (Oscar H. Senf)
- File:Patent-US-2236720.pdf + (Oscar H. Senf)
- File:Patent-US-1809992.pdf + (Oscar J. Sundstrand)
- File:Patent-FR-498271.pdf + (Osmond Blythe Wade)
- File:Patent-FR-498272.pdf + (Osmond Blythe Wade)
- File:Patent-GB-125906.pdf + (Osmond Blythe Wade)
- File:Patent-GB-127532.pdf + (Osmond Blythe Wade)
- File:Patent-GB-190721882.pdf + (Osmond Blythe Wade)
- File:Patent-GB-191310028.pdf + (Osmond Blythe Wade)
- File:Patent-GB-191316916.pdf + (Osmond Blythe Wade)
- File:Patent-GB-215803.pdf + (Osmond Blythe Wade)
- File:Patent-US-1313056.pdf + (Oswald H. Blackwood)
- File:Patent-DE-835416.pdf + (Otto Axtmann)
- File:Patent-US-766560.pdf + (Otto E. Weidlich)
- File:Patent-US-760829.pdf + (Otto E. Weidlich)
- File:Patent-US-818803.pdf + (Otto E. Weidlich)
- File:Patent-US-422474.pdf + (Otto E. Weidlich)
- File:Patent-US-556522.pdf + (Otto E. Weidlich)
- File:Patent-US-D047595.pdf + (Otto Huber)
- File:Patent-US-2272674.pdf + (Otto J. Kehr)
- File:Patent-US-2308658.pdf + (Otto Jendresen)
- File:Patent-US-2308659.pdf + (Otto Jendresen)
- File:Patent-US-2339079.pdf + (Otto Jendresen)
- File:Patent-FR-737250.pdf + (Ourest Pousino)
- File:Patent-US-1783681.pdf + (Owen R. Terry)
- File:Patent-DE-678716.pdf + (Paul Buschle)
- File:Patent-DE-820098.pdf + (Paul Buschle)
- File:Patent-DE-1637249U.pdf + (Paul Buschle)
- File:Patent-DE-870813.pdf + (Paul Buschle)
- File:Patent-US-651736.pdf + (Paul E. Wirt)
- File:Patent-US-651735.pdf + (Paul E. Wirt)
- File:Patent-US-651737.pdf + (Paul E. Wirt)
- File:Patent-US-651738.pdf + (Paul E. Wirt)
- File:Patent-US-1347800.pdf + (Paul E. Wirt)
- File:Patent-US-1379890.pdf + (Paul E. Wirt)
- File:Patent-US-675698.pdf + (Paul E. Wirt)
- File:Patent-US-311554.pdf + (Paul E. Wirt)
- File:Patent-US-723112.pdf + (Paul E. Wirt)
- File:Patent-US-723113.pdf + (Paul E. Wirt)
- File:Patent-US-724983.pdf + (Paul E. Wirt)
- File:Patent-US-724984.pdf + (Paul E. Wirt)
- File:Patent-US-764652.pdf + (Paul E. Wirt)
- File:Patent-US-841475.pdf + (Paul E. Wirt)
- File:Patent-US-852368.pdf + (Paul E. Wirt)
- File:Patent-US-852369.pdf + (Paul E. Wirt)
- File:Patent-US-978419.pdf + (Paul E. Wirt)
- File:Patent-US-978420.pdf + (Paul E. Wirt)
- File:Patent-US-288290.pdf + (Paul E. Wirt)
- File:Patent-US-526428.pdf + (Paul E. Wirt)
- File:Patent-US-399306.pdf + (Paul E. Wirt)
- File:Patent-US-330358.pdf + (Paul E. Wirt)
- File:Patent-US-526425.pdf + (Paul E. Wirt)
- File:Patent-US-526426.pdf + (Paul E. Wirt)
- File:Patent-US-526427.pdf + (Paul E. Wirt)
- File:Patent-FR-395110.pdf + (Paul E. Wirt)
- File:Patent-US-358525.pdf + (Paul E. Wirt)
- File:Patent-US-675699.pdf + (Paul E. Wirt)
- File:Patent-US-706140.pdf + (Paul E. Wirt)
- File:Patent-US-706141.pdf + (Paul E. Wirt)
- File:Patent-FR-807679.pdf + (Vaclav Klimes)
- File:Patent-BE-337528.pdf + (Hermann Burkhardt)
- File:Patent-GB-260304.pdf + (Hermann Burkhardt)
- File:Patent-GB-302015.pdf + (Paul Kohler)
- File:Patent-US-D106326.pdf + (Paul M. Ressinger)
- File:Patent-US-D107708.pdf + (Paul M. Ressinger)
- File:Patent-US-1647093.pdf + (Paul S. Hauton)
- File:Patent-FR-505917.pdf + (Paul-Leonide Baudry)
- File:Patent-GB-269614.pdf + (Emanuel Feldorf)
- File:Patent-DE-834963.pdf + (Peter Franz)
- File:Patent-US-1428195.pdf + (John C. Wahl)
- File:Patent-DK-68984.pdf + (Peter Jensen Neesgaard)
- File:Patent-US-D145171.pdf + (Warren Green)
- File:Patent-US-D140026.pdf + (Peter Schladermundt)
- File:Patent-US-D146176.pdf + (Warren Green)
- File:Patent-US-D159978.pdf + (Warren Green)
- File:Patent-US-D145870.pdf + (Warren Green)
- File:Patent-US-2403083.pdf + (Philip C. Hull)
- File:Patent-US-2308810.pdf + (Philip C. Hull)
- File:Patent-US-2398531.pdf + (Philip C. Hull)
- File:Patent-US-2504420.pdf + (Philip C. Hull)
- File:Patent-US-2510634.pdf + (Philip C. Hull)
- File:Patent-US-2598171.pdf + (Philip C. Hull)
- File:Patent-US-1059398.pdf + (Philip J. Schreiber)
- File:Patent-US-1385187.pdf + (Philip W. Olson)
- File:Patent-FR-Poenaru.pdf + (Pierre Poyenar)
- File:Patent-FR-991812.pdf + (Pierre-Marie-Joseph Ledieu)
- File:Patent-FR-61714E.pdf + (Pierre-Marie-Joseph Ledieu)
- File:Patent-US-1433325.pdf + (Arthur Winter)
- File:Patent-FR-1048242.pdf + (H. Boursier)
- File:Patent-FR-1086929.pdf + (H. Boursier)
- File:Patent-US-2061405.pdf + (Russel B. Kingman)
- File:Patent-US-2935044.pdf + (Frederick R. Wittnebert)
- File:Patent-US-3154055.pdf + (Ray A. Lawton)
- File:Patent-US-D123485.pdf + (Ray E. McKiernan)
- File:Patent-US-D187253.pdf + (Raymond E. Lambert)
- File:Patent-US-2749883.pdf + (Raymond L. Dostert)
- File:Patent-US-D137867.pdf + (Raymond Loewy)
- File:Patent-US-D137866.pdf + (Raymond Loewy)
- File:Patent-US-D139551.pdf + (Raymond Loewy)
- File:Patent-US-2213931.pdf + (Raymond S. Huss)
- File:Patent-US-1510618.pdf + (Raymond T. Bell)
- File:Patent-US-2093919.pdf + (Reinhold Lotterer)
- File:Patent-US-D099183.pdf + (William Bowker)
- File:Patent-US-772467.pdf + (Rhodes G. Lockwood)
- File:Patent-US-324393.pdf + (Rhodes G. Lockwood)
- File:Patent-US-816345.pdf + (Rhodes G. Lockwood)
- File:Patent-US-1080176.pdf + (Richard H. Stevens)
- File:Patent-US-2557054.pdf + (Richard J. Mansheim)
- File:Patent-US-2868173.pdf + (Richard J. Mansheim)
- File:Patent-US-2919677.pdf + (Richard J. Mansheim)
- File:Patent-US-2935967.pdf + (Richard J. Mansheim)
- File:Patent-US-2942576.pdf + (Richard J. Mansheim)
- File:Patent-GB-363935.pdf + (Rinji Nomura)
- File:Patent-US-1980159.pdf + (Robert Back)
- File:Patent-US-1787406.pdf + (Donald D. Mungen)
- File:Patent-US-D081742.pdf + (Robert Back)
- File:Patent-US-2151548.pdf + (Robert Back)
- File:Patent-US-D081741.pdf + (Robert Back)
- File:Patent-US-D106701.pdf + (Robert Back)
- File:Patent-US-D094375.pdf + (Robert Back)
- File:Patent-US-D093807.pdf + (Robert Back)
- File:Patent-US-D081223.pdf + (Robert Back)
- File:Patent-US-D086433.pdf + (Robert Back)
- File:Patent-US-1902208.pdf + (Robert Back)
- File:Patent-US-D071994.pdf + (Robert Back)
- File:Patent-US-D079691.pdf + (Robert Back)
- File:Patent-US-D087378.pdf + (Robert Back)
- File:Patent-US-1916199.pdf + (Robert Back)
- File:Patent-US-1762104.pdf + (Robert C. Liddell)
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