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- Patent n° US-214795, of 1879-04-29, requested on 1879-02-06, of William W. Stewart, Swan. Improvement in fountain-pen holder.
- Patent n° US-293545, of 1884-02-12, requested on 1883-09-19, of Lewis E. Waterman, Waterman. Fountain-pen.
- Patent n° US-307735, of 1884-11-04, requested on 1883-06-20, of Lewis E. Waterman, Waterman. Fountain-pen.
- Patent n° US-314547, of 1885-03-24, requested on 1884-06-30, of William W. Stewart, Swan. Fountain-pen.
- Patent n° US-345411, of 1886-07-13, requested on 1886-03-18, of Francis C. Brown, Caw's. Fountain-pen.
- Patent n° US-351033, of 1886-10-19, requested on 1886-08-23, of John A. Holland, John Holland Pen Company. Fountain-pen.
- Patent n° US-353053, of 1886-11-23, requested on 1886-04-20, of Dewitt C. Demarest, Eagle. Fountain-pen.
- Patent n° US-353399, of 1886-11-30, requested on 1886-08-18, of Francis C. Brown, David W. Beaumel, Caw's. Fountain-pen.
- Patent n° US-361493, of 1887-04-19, requested on 1886-11-06, of Dewitt C. Demarest, Eagle. Fountain-pen.
- Patent n° US-374140, of 1887-11-29, requested on 1887-04-15, of Francis C. Brown, Caw's. Fountain-pen.
- Patent n° US-378987, of 1888-03-06, requested on 1887-04-27, of William W. Stewart, Swan. Fountain-pen.
- Patent n° US-408000, of 1889-06-30, requested on 1888-11-23, of Dewitt C. Demarest, Eagle. Fountain-pen.
- Patent n° US-416944, of 1889-12-12, requested on 1888-12-04, of George S. Parker, The Parker Pen Company. Fountain pen.
- Patent n° US-422474, of 1890-03-04, requested on 1889-09-27, of Otto E. Weidlich, Weidlich. Fountain-pen.
- Patent n° US-423804, of 1890-03-18, requested on 1889-09-28, of George S. Parker, The Parker Pen Company. Fountain-pen.
- Patent n° US-426692, of 1890-04-29, requested on 1889-09-20, of William W. Stewart, Swan. Fountain-pen.
- Patent n° US-455023, of 1891-06-30, requested on 1890-11-26, of George S. Parker, The Parker Pen Company. Fountain-pen.
- Patent n° US-480751, of 1892-08-16, requested on 1890-01-20, of William W. Stewart, Swan. Fountain-pen.
- Patent n° US-485795, of 1892-11-08, requested on 1892-02-29, of John A. Holland, John Holland Pen Company. Fountain-pen.
- Patent n° US-491795, of 1893-02-14, requested on 1890-05-14, of David W. Beaumel, Beaumel. Fountain-pen.
- Patent n° US-510439, of 1893-12-12, requested on 1892-12-14, of George S. Parker, The Parker Pen Company. Fountain-pen.
- Patent n° US-512319, of 1894-01-09, requested on 1893-11-01, of George S. Parker, The Parker Pen Company. Fountain-pen.
- Patent n° US-533350, of 1895-01-29, requested on 1893-06-14, of Walter F. Cushing, Moore Pen Company. Fountain-pen.
- Patent n° US-556522, of 1896-03-17, requested on 1895-10-14, of Otto E. Weidlich, Weidlich. Fountain-pen.
- Patent n° US-559422, of 1896-05-05, requested on 1895-09-27, of Lewis E. Waterman, Waterman. Fountain-pen.
- Patent n° US-592847, of 1897-11-02, requested on 1897-01-06, of Arthur A. Waterman, A. A. Waterman. Fountain-pen.
- Patent n° US-603463, of 1898-05-03, requested on 1897-03-26, of David W. Beaumel, Beaumel. Fountain-pen.
- Patent n° US-606231, of 1898-06-28, requested on 1897-07-26, of George S. Parker, The Parker Pen Company. Fountain-pen.
- Patent n° US-607397, of 1898-07-12, requested on 1897-08-24, of Lewis E. Waterman, Waterman. Fountain-pen.
- Patent n° US-607398, of 1898-07-12, requested on 1897-08-24, of Lewis E. Waterman, Waterman. Fountain pen.
- Patent n° US-607399, of 1898-07-12, requested on 1897-08-24, of Lewis E. Waterman, Waterman. Fountain-pen.
- Patent n° US-607400, of 1898-07-12, requested on 1897-09-22, of Lewis E. Waterman, Waterman. Fountain-pen.
- Patent n° US-607401, of 1898-07-12, requested on 1897-09-22, of Lewis E. Waterman, Waterman. Fountain-pen.
- Patent n° US-610428, of 1898-09-06, requested on 1898-06-30, of Claes W. Boman, Eagle. Fountain-pen.
- Patent n° US-619701, of 1899-02-14, requested on 1897-03-08, of Arthur A. Waterman, A. A. Waterman, Sterling Fountain Pen. Fountain-pen.
- Patent n° US-625722, of 1899-05-23, requested on 1898-08-24, of William I. Ferris, Waterman. Fountain-pen.
- Patent n° US-634398, of 1899-10-03, requested on 1899-08-04, of Dewitt C. Demarest, Eagle. Fountain-pen.
- Patent n° US-638779, of 1899-12-12, requested on 1899-08-16, of Arthur A. Waterman, A. A. Waterman. Fountain-pen.
- Patent n° US-648839, of 1900-05-01, requested on 1900-03-10, of Claes W. Boman, Eagle. Fountain-pen.
- Patent n° US-677008, of 1901-06-25, requested on 1900-10-26, of Walter W. Winton, Eagle. Fountain-pen.
- Patent n° US-679790, of 1901-08-06, requested on 1901-03-05, of William W. Stewart, Swan. Fountain-pen.
- Patent n° US-698881, of 1902-04-29, requested on 1896-02-01, of Lewis E. Waterman, Waterman. Fountain-pen.
- Patent n° US-703418, of 1902-07-01, requested on 1902-03-17, of John A. Holland, John Holland Pen Company. Fountain-pen.
- Patent n° US-714283, of 1902-11-25, requested on 1901-05-20, of Alonzo T. Cross, Cross. Fountain-pen.
- Patent n° US-734563, of 1903-07-28, requested on 1902-12-09, of Frank M. Kegrize, Kegrize. Fountain-pen.
- Patent n° US-735659, of 1903-08-04, requested on 1903-01-26, of William I. Ferris, Waterman. Fountain-pen.
- Patent n° US-736710, of 1903-08-18, requested on 1903-06-16, of William I. Ferris, Waterman. Fountain-pen.
- Patent n° US-750271, of 1904-01-26, requested on 1902-09-04, of August Eberstein, Boston Pen. Fountain pen.
- Patent n° US-750546, of 1904-01-26, requested on 1903-04-16, of Frank M. Kegrize, Kegrize. Fountain-pen.
- Patent n° US-757664, of 1904-04-19, requested on 1903-07-28, of Frank M. Kegrize, Kegrize. Fountain-pen.
- Patent n° US-760829, of 1904-08-02, requested on 1904-05-16, of Otto E. Weidlich, Weidlich. Fountain-pen.
- Patent n° GB-190407468, of 1904-08-18, requested on 1904-04-29, of Frank M. Kegrize, Kegrize. Improvements in Fountain Pens.
- Patent n° US-768216, of 1904-08-23, requested on 1904-06-25, of August Eberstein, Boston Pen. Fountain-pen.
- Patent n° US-771360, of 1904-10-04, requested on 1904-02-03, of August Eberstein, Boston Pen. Fountain-pen.
- Patent n° US-776428, of 1904-11-29, requested on 1904-01-29, of Julius L. Schnell, Schnell, Bankers. Feeder-bar for fountain-pens.
- Patent n° US-778997, of 1905-01-03, requested on 1904-04-09, of George S. Parker, The Parker Pen Company. Feeder for fountain-pens.
- Patent n° US-803866, of 1905-11-07, requested on 1904-12-06, of William A. Welty, Welty. Fountain-pen feed.
- Patent n° US-810284, of 1905-12-12, requested on 1905-03-20, of Frank M. Kegrize, Kegrize. Fountain-pen.
- Patent n° FR-360837, of 1906-05-04, requested on 1905-12-11, Roeder. Dispositif formant réservoir d'encre pour plumes et porte-plumes.
- Patent n° US-819719, of 1906-05-08, requested on 1905-07-07, of Francis C. Brown, Caw's. Fountain-pen.
- Patent n° US-834541, of 1906-10-30, requested on 1906-01-18, of William A. Welty, Welty. Fountain pen.
- Patent n° US-844575, of 1907-02-19, requested on 1905-12-11, of John S. Barnes, Waterman. Fountain-pen.
- Patent n° US-844576, of 1907-02-19, requested on 1906-04-10, of John S. Barnes, Waterman. Fountain-pen.
- Patent n° US-848620, of 1907-04-02, requested on 1905-12-18, of John S. Barnes, Waterman. Fountain-pen.
- Patent n° GB-190708313, of 1907-12-31, requested on 1907-04-10, of Duncan Cameron, Cameron. Improvements in Pen-nibs for use in connection with Fountain and other Pens.
- Patent n° US-900833, of 1908-10-13, requested on 1906-08-21, of Alonzo T. Cross, Cross. Fountain-pen.
- Patent n° GB-190809818, of 1909-01-21, requested on 1908-05-06, of Duncan Cameron, Cameron. Improvements in and relating to Fountain Pen Nibs.
- Patent n° US-910980, of 1909-01-28, requested on 1908-03-28, of Edward V. Whiton, Williamson's Safety Fountain Pen - Torino. Feed-bar for fountain-pens.
- Patent n° FR-396527, of 1909-04-14, requested on 1908-05-06, of Duncan Cameron, Cameron. Bec de plume à réservoir.
- Patent n° GB-190828493, of 1909-08-19, requested on 1907-04-10, of Duncan Cameron, Cameron. Improvements in Fountain Pen Nibs.
- Patent n° GB-190823642, of 1909-09-02, requested on 1908-11-05, of Duncan Cameron, Albert Edward Wright, Cameron. Improvements in or relating to Fountain Pens.
- Patent n° US-940509, of 1909-11-16, requested on 1908-11-28, of Duncan Cameron, Cameron. Fountain pen nib.
- Patent n° US-990288, of 1911-04-25, requested on 1910-06-16, of George S. Parker, The Parker Pen Company. Fountain-pen.
- Patent n° GB-191129078, of 1912-11-14, requested on 1912-06-13, of August Eberstein, Ernest M. Wade, Lang - Curzon - Summit. Improvements in or relating to Self-filling Fountain or Reservoir Pens.
- Patent n° US-1046821, of 1912-12-10, requested on 1912-05-03, of William L. MacDonald, Moore Pen Company. Fountain-pen.
- Patent n° US-1080176, of 1913-12-02, requested on 1912-01-09, of Richard H. Stevens, Waterman. Fountain-pen.
- Patent n° US-1151980, of 1915-08-31, requested on 1912-02-17, of De Witt C. Van Valer, A. A. Waterman. Fountain-pen.
- Patent n° US-1201951, of 1916-10-17, requested on 1914-06-03, of William I. Ferris, Waterman. Fountain-pen.
- Patent n° GB-104980, of 1917-03-29, requested on 1916-06-09, of William I. Ferris, Waterman. Improvements in Fountain Pens.
- Patent n° US-1267624, of 1918-05-28, requested on 1917-03-19, of George F. Brandt, Moore Pen Company. Fountain-pen.
- Patent n° US-1284525, of 1918-11-12, requested on 1914-06-10, of Russell T. Wing, The Parker Pen Company. Fountain-pen.
- Patent n° US-1347901, of 1920-07-27, requested on 1919-09-08, of William T. Fitzpatrick, Welty. Retarded delivery device for fountain-pens.
- Patent n° US-1357083, of 1920-10-26, requested on 1916-06-29, of Julius L. Schnell, Schnell. Feed-bar for fountain-pens.
- Patent n° SE-59425, of 1921-03-30, requested on 1919-11-20, of Theodor Kovacs, Günther Wagner - Pelikan. Reservoarpenna.
- Patent n° DE-349410, of 1922-03-02, requested on 1920-05-29, of Theodor Kovacs, Günther Wagner - Pelikan. Schreib- oder Zeichengeraet mit Befestigung der Feder durch einen Ring.
- Patent n° DE-366684, of 1923-01-09, requested on 1920-02-08, of Theodor Kovacs, Günther Wagner - Pelikan. Selbsttaetiger Fuellhalter, insbesondere fuer Stahlfedern.
- Patent n° NL-11429, of 1924-05-16, requested on 1919-11-21, of Theodor Kovacs, Günther Wagner - Pelikan. Fountain pen.
- Patent n° US-1498558, of 1924-06-24, requested on 1923-12-20, of Arthur K. Liddell, Corona Pen Company. Fountain-pen ink-feeding device.
- Patent n° US-1507782, of 1924-09-09, requested on 1920-01-30, of Carl F. Litts, W. A. Sheaffer Pen Company. Fountain pen.
- Patent n° DE-406609, of 1924-11-25, requested on 1923-07-17, of Theodor Kovacs, Günther Wagner - Pelikan. Füllhalter mit Füllmöglichkeit durch den ungeoeffneten Halterkopf.
- Patent n° FR-585289, of 1925-02-24, requested on 1923-07-17, of Theodor Kovacs, Günther Wagner - Pelikan. Porte-plume à réservoir.
- Patent n° GB-229928, of 1925-03-05, requested on 1923-07-17, of Theodor Kovacs, Günther Wagner - Pelikan. Improvements in or relating to fountain pens.
- Patent n° FR-590697, of 1925-06-20, requested on 1924-01-08, De La Rue - Onoto. Perfectionnements aux porte-plume réservoirs.
- Patent n° FR-593376, of 1925-08-21, requested on 1925-02-07, of Yves Zuber, Stylomine. Fixation et alimentation d'une plume de porte-plume réservoir.
- Patent n° US-1574929, of 1926-03-02, requested on 1922-04-01, of Robert T. Pollock, John Hancock. Fountain pen.
- Patent n° US-1574930, of 1926-03-02, requested on 1924-04-18, of Robert T. Pollock, John Hancock. Fountain pen.
- Patent n° US-1624554, of 1927-04-12, requested on 1925-07-13, of Theodor Kovacs, Günther Wagner - Pelikan. Reservoir Pen.
- Patent n° DE-443893, of 1927-05-12, requested on 1925-07-13, of Theodor Kovacs, Günther Wagner - Pelikan. Füllfederhalter mit abnehmbarer Feder.
- Patent n° GB-270915, of 1927-05-19, requested on 1925-07-13, of Theodor Kovacs, Günther Wagner - Pelikan. Improvements in Reservoir Pens.
- Patent n° US-1633111, of 1927-06-21, requested on 1925-07-11, of Theodor Kovacs, Günther Wagner - Pelikan. Reservoir pen.
- Patent n° US-1633896, of 1927-06-28, requested on 1923-07-17, of Theodor Kovacs, Günther Wagner - Pelikan. Fountain pen.
- Patent n° DE-447572, of 1927-07-30, requested on 1923-07-17, of Theodor Kovacs, Günther Wagner - Pelikan. Füllhalter.
- Patent n° US-1724107, of 1929-09-13, requested on 1923-02-17, of Robert T. Pollock, John Hancock. Fountain pen.
- Patent n° US-1750410, of 1930-03-11, requested on 1928-04-11, of Theodor Kovacs, Günther Wagner - Pelikan. Reservoir pen.
- Patent n° US-1811874, of 1931-06-30, requested on 1929-01-30, of Edward C. Berry, Chilton. Fountain-pen.
- Patent n° US-1818743, of 1931-08-11, requested on 1929-09-26, of Kenneth S. Parker, The Parker Pen Company. Adjustable feed for fountain pens.
- Patent n° US-1853731, of 1932-04-12, requested on 1929-08-19, of Theodor Kovacs, Günther Wagner - Pelikan. Reservoir pen.
- Patent n° US-1882644, of 1932-10-11, requested on 1930-08-16, of Louis H. Juster, Waterman. Feed for fountain pens.
- Patent n° US-1885862, of 1932-11-01, requested on 1931-06-29, of Salomon M. Sager, Sager. Feed bar and pen point.
- Patent n° US-1908123, of 1933-05-09, requested on 1929-07-22, of William R. Cuthbert, W. A. Sheaffer Pen Company. Fountain pen construction.
- Patent n° US-1950364, of 1934-03-06, requested on 1932-09-26, of William E. Moore, The Parker Pen Company. Fountain pen feed.
- Patent n° FR-764523, of 1934-05-23, requested on 1933-02-13, Pilot. Perfectionnements aux porte-plume réservoirs.
- Patent n° FR-774950, of 1934-12-17, requested on 1933-09-12, Paillard. Perfectionnements aux porte-plume à réservoir.
- Patent n° DE-625889, of 1936-02-17, requested on 1935-04-09, Kaweco. Tintenleiter fuer Fuellfederhalter.
- Patent n° BE-422774, of 1937-08-31, requested on 1937-03-11, of William F. Johnson, Mentmore. Perfectionnements aux porte-plume réservoirs.
- Patent n° US-2107150, of 1938-02-01, requested on 1935-09-21, of William F. Heising, W. A. Sheaffer Pen Company. Fountain pen.
- Patent n° US-2107162, of 1938-02-01, requested on 1935-09-21, of Henry H. Polk Jr., W. A. Sheaffer Pen Company. Fountain pen.
- Patent n° US-2110578, of 1938-03-08, requested on 1935-09-21, of Aloysius L. Prasch, W. A. Sheaffer Pen Company. Fountain pen.
- Patent n° US-2129134, of 1938-09-06, requested on 1936-07-21, of William F. Johnson, Mentmore. Self-filling sac pen.
- Patent n° FR-824603, of 1938-09-06, requested on 1936-07-21, Mentmore. Perfectionnement aux stylographes.
- Patent n° GB-491876, of 1938-09-12, requested on 1937-03-11, of William F. Johnson, Mentmore. Improvements in or relating to fountain pens.
- Patent n° DE-672665, of 1939-03-08, requested on 1936-02-10, Unbranded. Tintenleiter fuer Fuellfederhalter mit zu beiden Seiten und an der Unterseite des Luft- und Tintenkanals laengs verlaufenden Ausgleichskammern.
- Patent n° FR-841365, of 1939-05-17, requested on 1938-01-20, Stylomine. Nouveau «conduit d'encre» pour stylographe.
- Patent n° US-2223541, of 1940-12-03, requested on 1939-01-06, of Marlin S. Baker, The Parker Pen Company. Fountain pen.
- Patent n° GB-534657, of 1941-03-13, requested on 1939-01-06, The Parker Pen Company. Fountain pen.
- Patent n° FR-862566, of 1941-03-14, requested on 1937-06-07, The Parker Pen Company. Stylographe.
- Patent n° US-2241865, of 1941-05-13, requested on 1939-12-28, of Lynn P. Martin, Herman K. Stempel, W. A. Sheaffer Pen Company. Fountain pen.
- Patent n° GB-537269, of 1941-06-16, requested on 1937-06-07, The Parker Pen Company. Fountain pen.
- Patent n° US-2255093, of 1941-09-09, requested on 1940-07-01, of George E. Ziegler, Wahl Eversharp. Fountain pen.
- Patent n° US-2282840, of 1942-05-12, requested on 1941-10-03, of Russell T. Wing, The Parker Pen Company. Fountain pen.
- Patent n° US-2283333, of 1942-05-19, requested on 1941-05-22, of Lynn P. Martin, W. A. Sheaffer Pen Company. Fountain pen.
- Patent n° US-2292381, of 1942-08-11, requested on 1940-12-24, of Henry C. Klagges, Esterbrook. Fountain pen feed.
- Patent n° US-2303373, of 1942-12-01, requested on 1941-11-03, of Lynn P. Martin, W. A. Sheaffer Pen Company. Fountain pen.
- Patent n° FR-879582, of 1943-02-26, requested on 1941-02-22, Stylomine. Nouveau conduit d'amenée d'encre pour stylographe.
- Patent n° US-2316479, of 1943-04-13, requested on 1942-08-27, of Norman E. Weigel, Wearever. Fountain pen.
- Patent n° FR-51854E, of 1943-05-24, requested on 1941-11-29, Stylomine. Nouveau conduit d'amenée d'encre pour stylographe.
- Patent n° US-2328143, of 1943-08-31, requested on 1942-06-27, of Benjamin W. Hanle, Eagle. Fountain pen.
- Patent n° US-2337343, of 1943-12-21, requested on 1941-04-01, of John William Para, Wearever. Pen.
- Patent n° US-2375770, of 1945-05-15, requested on 1943-11-19, of Arthur O. Dahlberg, The Parker Pen Company. Fountain pen.
- Patent n° US-2380763, of 1945-07-31, requested on 1944-10-14, of David Juelss, Venus. Feed for fountain pens.
- Patent n° US-2398521, of 1946-04-16, requested on 1944-01-20, of George D. Cloutier, Wahl Eversharp. Fountain pen.
- Patent n° US-2410423, of 1946-11-05, requested on 1944-10-14, of Thomas F. Brinson, Scripto. Fountain pen.
- Patent n° US-2417861, of 1947-03-25, requested on 1945-01-09, of Arthur O. Dahlberg, The Parker Pen Company. Fountain pen.
- Patent n° FR-922825, of 1947-06-19, requested on 1946-01-08, Walkover. Conduit perfectionné pour porte-plumes à réservoir.
- Patent n° GB-595436, of 1947-12-04, requested on 1945-05-23, The Parker Pen Company. Fountain pen.
- Patent n° CH-266126, of 1948-10-22, requested on 1944-10-14, of Thomas F. Brinson, Scripto. Porte-plume à réservoir.
- Patent n° FR-938710, of 1948-10-22, requested on 1944-10-14, of Thomas F. Brinson, Scripto. Perfectionnements aux porte-plume à réservoir.
- Patent n° GB-612956, of 1948-11-19, requested on 1946-06-11, of William F. Johnson, Mentmore. Improvements in or relating to fountain pens.
- Patent n° CH-260100, of 1949-02-28, requested on 1945-06-28, The Parker Pen Company. Fountain pen.
- Patent n° GB-620605, of 1949-03-28, requested on 1946-09-13, Scripto. Improvements in and relating to Fountain Pens.
- Patent n° US-2474996, of 1949-07-05, requested on 1945-10-12, of Frank B. Wallis, W. A. Sheaffer Pen Company. Fountain pen.
- Patent n° US-2519966, of 1949-07-12, requested on 1946-06-11, of William F. Johnson, Mentmore. Fountain pen.
- Patent n° FR-947791, of 1949-07-12, requested on 1946-06-11, of William F. Johnson, Mentmore. Perfectionnement à la construction des stylographes à réservoir.
- Patent n° US-2489983, of 1949-11-29, requested on 1944-02-14, of Victor H. Severy, Scripto. Fountain pen.
- Patent n° US-2512004, of 1950-06-20, requested on 1945-03-05, of Russell T. Wing, The Parker Pen Company. Fountain pen.
- Patent n° GB-646726, of 1950-11-29, requested on 1947-03-03, The Parker Pen Company. Improvements in or relating to fountain pens.
- Patent n° FR-969966, of 1950-12-28, requested on 1947-03-03, of Floyd E. Bartell et al, The Parker Pen Company. Stylographe aver reservoir d'encre remplissable par capillarité.
- Patent n° CH-274547, of 1951-04-15, requested on 1947-03-03, The Parker Pen Company. Füllfederhalter.
- Patent n° US-2548906, of 1951-04-17, requested on 1945-10-19, of John William Para, Wearever. Fountain pen.
- Patent n° DE-804411, of 1951-04-22, requested on 1946-06-11, of William F. Johnson, Mentmore. Fuellfederhalter.
- Patent n° DE-811086, of 1951-08-16, requested on 1948-10-06, Uhu. Tintenleiter fuer Fuellfederhalter.
- Patent n° DE-814572, of 1951-09-24, requested on 1949-05-13, of Gregor Miltner, Faber-Castell. Tintenleiter fuer Fuellfederhalter.
- Patent n° DE-820253, of 1951-11-08, requested on 1950-03-23, of Emil Gühne et al, Soennecken. Füllfederhalter, bei dem die Feder zwischen der Innenwand des Halterschaftes und des Tintenleiters festgeklemmt ist.
- Patent n° US-2581739, of 1952-01-08, requested on 1945-03-05, of Russell T. Wing, The Parker Pen Company. Fountain pen.
- Patent n° DE-828966, of 1952-01-21, requested on 1950-02-02, of Theodor Kovacs, Günther Wagner - Pelikan. Tintenleiter für Füllfederhalter.
- Patent n° DE-835414, of 1952-03-31, requested on 1950-07-04, of Konrad Kressel et al, Montblanc. Tintenleiter für Füllfederhalter.
- Patent n° FR-1005485, of 1952-04-10, requested on 1947-07-28, Stylomine. Perfectionnements à la construction des stylographes.
- Patent n° US-2619070, of 1952-11-25, requested on 1946-09-19, of Marlin S. Baker, The Parker Pen Company. Ink feed and overflow collector means for fountain pens.
- Patent n° US-2620774, of 1952-12-09, requested on 1948-06-08, of James A. Mustard, The Parker Pen Company. Fountain pen.
- Patent n° DE-867213, of 1953-02-16, requested on 1951-08-08, of Josef C. Lamy, Lamy. Tintenleiteranordnung.
- Patent n° DE-875462, of 1953-05-04, requested on 1940-06-05, of Emil Wenzel, Soennecken. Tintenleiter mit einem mit Kapillarkanaelen verbundenen Luftkanal fuer Fuellhalter mit durch Druck verstellbarem Fuellkolben.
- Patent n° DE-882047, of 1953-07-06, requested on 1947-03-03, of Floyd E. Bartell et al, The Parker Pen Company. Fuellfederhalter.
- Patent n° US-2648309, of 1953-08-11, requested on 1950-09-23, of Floyd E. Bartell, The Parker Pen Company. Fountain pen.
- Patent n° FR-1037143, of 1953-09-15, requested on 1951-05-16, Stylomine. Régulateur d'écoulement pour distributeur de liquide et notamment pour instrument à écrire.
- Patent n° DE-894218, of 1953-10-22, requested on 1950-12-15, Fend. Tintenleiter mit Feder fuer Fuellfederhalter.
- Patent n° FR-1045856, of 1953-12-01, requested on 1950-07-15, of Theodor Kovacs, Günther Wagner - Pelikan. Stylographe.
- Patent n° FR-1058739, of 1954-03-18, requested on 1951-07-10, of Theodor Kovacs, Günther Wagner - Pelikan. Porte-plume réservoir.
- Patent n° DE-907750, of 1954-03-29, requested on 1952-05-06, of Josef C. Lamy, Lamy. Ausbildung und Anordnung der Tintenführung bei Füllhaltern.
- Patent n° GB-708633, of 1954-05-05, requested on 1950-02-02, of Theodor Kovacs, Günther Wagner - Pelikan. Improvements in fountain pens.
- Patent n° GB-713536, of 1954-08-11, requested on 1950-07-15, of Theodor Kovacs, Günther Wagner - Pelikan. Improvements relating to Fountain Pens.
- Patent n° FR-1071648, of 1954-09-02, requested on 1952-02-13, Stylomine. Dispositif de régulation de l'écoulement de l'encre dans les stylographes.
- Patent n° DE-920051, of 1954-11-22, requested on 1950-07-15, of Theodor Kovacs, Günther Wagner - Pelikan. Füllfederhalter.
- Patent n° DE-926653, of 1955-04-21, requested on 1952-05-08, of Josef C. Lamy, Lamy. Fuellfederhalter.
- Patent n° GB-729729, of 1955-05-11, requested on 1952-05-01, of Edward Stephen Sears, Swan. Improvements in Nib-Sections for Fountain Pens.
- Patent n° CH-307024, of 1955-05-15, requested on 1950-07-15, of Theodor Kovacs, Günther Wagner - Pelikan. Füllfederhalter.