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Elenco dei risultati
- File:Patent-US-D116097.pdf + (Kenneth S. Parker, Marlin S. Baker)
- File:Patent-GB-154556.pdf + (Klio-Werk G.m.b.H.)
- File:Patent-DE-361490.pdf + (Klio-Werk G.m.b.H.)
- File:Patent-US-1208653.pdf + (Klio-Werk, Fabrik für Gebrauchsgegenstände, G.m.b.H.)
- File:Patent-DE-290998.pdf + (Klio-Werk, Fabrik für Gebrauchsgegenstände, G.m.b.H.)
- File:Patent-FR-473733.pdf + (Klio-Werk, Fabrik für Gebrauchsgegenstände, G.m.b.H.)
- File:Patent-FR-446037.pdf + (Klio-Werk, Fabrik für Gebrauchsgegenstände, G.m.b.H.)
- File:Patent-CH-68675.pdf + (Klio-Werk, Fabrik für Gebrauchsgegenstände, G.m.b.H.)
- File:Patent-GB-191412837.pdf + (Klio-Werk, fabrik für gebrauchsgegenstände, G.m.b.H.)
- File:Patent-GB-191309185.pdf + (Klio-Werk, fabrik für gebrauchsgegenstände, G.m.b.H.)
- File:Patent-DE-255378.pdf + (Klio-Werk, fabrik für gebrauchsgegenstände, G.m.b.H.)
- File:Patent-DE-264882.pdf + (Klio-Werk, fabrik für gebrauchsgegenstände, G.m.b.H. in Hennef A. Sieg.)
- File:Patent-DE-92299.pdf + (Klio-Werk, fabrik für gebrauchsgegenstände, G.m.b.H. in Hennef A. Sieg.)
- File:Patent-DE-505420.pdf + (Kohler & Schaefer in Pforzheim)
- File:Patent-DE-467712.pdf + (Kohler & Schaefer in Pforzheim)
- File:Patent-DE-468697.pdf + (Kohler & Schaefer in Pforzheim)
- File:Patent-DE-441349.pdf + (Kohler & Schaefer in Pforzheim)
- File:Patent-GB-302015.pdf + (Kohler & Schaefer in Pforzheim)
- File:Patent-CH-130454.pdf + (Kohler & Schaefer in Pforzheim)
- File:Patent-US-1111469.pdf + (Kracker Pen Co.)
- File:Patent-US-1199993.pdf + (Kracker Pen Co.)
- File:Patent-US-1164654.pdf + (Kracker Pen Co.)
- File:Patent-US-1194510.pdf + (Kracker Pen Co.)
- File:Patent-US-1242323.pdf + (Kracker Pen Co.)
- File:Patent-US-1111501.pdf + (Kracker Pen Co.)
- File:Patent-US-1170825.pdf + (Kracker Pen Co.)
- File:Patent-US-1237619.pdf + (Kraker Pen Co.)
- File:Patent-US-1482568.pdf + (Kritikson Bros. Inc.)
- File:Patent-US-1452674.pdf + (Kritikson Bros. Inc.)
- File:Patent-US-1459073.pdf + (Kritikson Bros. Inc.)
- File:Patent-US-1483675.pdf + (Kritikson Bros. Inc.)
- File:Patent-US-1480690.pdf + (Kritikson Brothers Incorporated)
- File:Patent-FR-807275.pdf + (Kurt Fend)
- File:Patent-FR-823652.pdf + (Kurt Fend)
- File:Patent-GB-474736.pdf + (Kurt Fend)
- File:Patent-US-2136290.pdf + (Kurt Fend)
- File:Patent-CH-193646.pdf + (Kurt Fend)
- File:Patent-GB-482097.pdf + (Kurt Fend)
- File:Patent-US-2163515.pdf + (Kurt Fend)
- File:Patent-DE-652024.pdf + (Kurt Fend)
- File:Patent-CH-194208.pdf + (Kurt Fend)
- File:Patent-GB-478118.pdf + (Kurt Fend)
- File:Patent-DE-664392.pdf + (Kurt Fend)
- File:Patent-US-2139084.pdf + (L. E. Waterman Company)
- File:Patent-US-735659.pdf + (L. E. Waterman Company)
- File:Patent-US-736710.pdf + (L. E. Waterman Company)
- File:Patent-US-799897.pdf + (L. E. Waterman Company)
- File:Patent-US-800141.pdf + (L. E. Waterman Company)
- File:Patent-US-908537.pdf + (L. E. Waterman Company)
- File:Patent-US-742036.pdf + (L. E. Waterman Company)
- File:Patent-US-950817.pdf + (L. E. Waterman Company)
- File:Patent-US-824688.pdf + (L. E. Waterman Company)
- File:Patent-US-1080176.pdf + (L. E. Waterman Company)
- File:Patent-US-1154498.pdf + (L. E. Waterman Company)
- File:Patent-US-1176529.pdf + (L. E. Waterman Company)
- File:Patent-US-1156748.pdf + (L. E. Waterman Company)
- File:Patent-US-1180946.pdf + (L. E. Waterman Company)
- File:Patent-US-1197360.pdf + (L. E. Waterman Company)
- File:Patent-US-1201951.pdf + (L. E. Waterman Company)
- File:Patent-US-1228177.pdf + (L. E. Waterman Company)
- File:Patent-US-1381856.pdf + (L. E. Waterman Company)
- File:Patent-US-1511225.pdf + (L. E. Waterman Company)
- File:Patent-US-1555407.pdf + (L. E. Waterman Company)
- File:Patent-US-1620529.pdf + (L. E. Waterman Company)
- File:Patent-US-1762103.pdf + (L. E. Waterman Company)
- File:Patent-US-1762104.pdf + (L. E. Waterman Company)
- File:Patent-US-1842503.pdf + (L. E. Waterman Company)
- File:Patent-US-1808779.pdf + (L. E. Waterman Company)
- File:Patent-US-1863061.pdf + (L. E. Waterman Company)
- File:Patent-US-1876698.pdf + (L. E. Waterman Company)
- File:Patent-US-1882644.pdf + (L. E. Waterman Company)
- File:Patent-US-1923269.pdf + (L. E. Waterman Company)
- File:Patent-US-1935010.pdf + (L. E. Waterman Company)
- File:Patent-US-1935011.pdf + (L. E. Waterman Company)
- File:Patent-US-1957677.pdf + (L. E. Waterman Company)
- File:Patent-US-1967580.pdf + (L. E. Waterman Company)
- File:Patent-US-2068419.pdf + (L. E. Waterman Company)
- File:Patent-US-2087672.pdf + (L. E. Waterman Company)
- File:Patent-US-2162223.pdf + (L. E. Waterman Company)
- File:Patent-US-D105022.pdf + (L. E. Waterman Company)
- File:Patent-US-2217755.pdf + (L. E. Waterman Company)
- File:Patent-US-2048127.pdf + (L. E. Waterman Company)
- File:Patent-US-2078083.pdf + (L. E. Waterman Company)
- File:Patent-US-2099126.pdf + (L. E. Waterman Company)
- File:Patent-US-2519675.pdf + (L. E. Waterman Company)
- File:Patent-US-2770221.pdf + (L. E. Waterman Company)
- File:Patent-US-D081248.pdf + (L. E. Waterman Company)
- File:Patent-US-D084943.pdf + (L. E. Waterman Company)
- File:Patent-US-D084944.pdf + (L. E. Waterman Company)
- File:Patent-US-D084641.pdf + (L. E. Waterman Company)
- File:Patent-US-D084249.pdf + (L. E. Waterman Company)
- File:Patent-US-D102720.pdf + (L. E. Waterman Company)
- File:Patent-US-D118872.pdf + (L. E. Waterman Company)
- File:Patent-US-D081246.pdf + (L. E. Waterman Company)
- File:Patent-US-D081247.pdf + (L. E. Waterman Company)
- File:Patent-US-D118873.pdf + (L. E. Waterman Company)
- File:Patent-US-D089939.pdf + (L. E. Waterman Company)
- File:Patent-US-1853316.pdf + (L. E. Waterman Company)
- File:Patent-US-1902091.pdf + (L. E. Waterman Company)
- File:Patent-US-2002092.pdf + (L. E. Waterman Company)
- File:Patent-GB-191505790.pdf + (L. E. Waterman Company)
- File:Patent-FR-480426.pdf + (L. E. Waterman Company)
- File:Patent-US-D097681.pdf + (L. E. Waterman Company)
- File:Patent-US-D090117.pdf + (L. E. Waterman Company)
- File:Patent-US-D098958.pdf + (L. E. Waterman Company)
- File:Patent-US-2557710.pdf + (Lang Pen Company Limited)
- File:Patent-DK-75743.pdf + (Lang Pen Company Limited)
- File:Patent-US-2148853.pdf + (Le Boeuf-Pilgrim Pen Co.)
- File:Patent-DE-1234578.pdf + (Le Foyer & Cie (JIF-Waterman A. J. Fagard))
- File:Patent-US-D028838.pdf + (Le Roy C. Fairchild)
- File:Patent-US-836905.pdf + (Le-White Manufacturing Company)
- File:Patent-US-1804522.pdf + (LeBoeuf Fountain Pen Co.)
- File:Patent-US-2222599.pdf + (Leon Hehl Ashmore)
- File:Patent-US-1070496.pdf + (Leopold Da Costa Levy)
- File:Patent-US-1964125.pdf + (Leopold Kutter)
- File:Patent-US-1789522.pdf + (Leopold Kutter)
- File:Patent-GB-392482.pdf + (Leopold Kutter)
- File:Patent-GB-364436.pdf + (Leopold Kutter)
- File:Patent-GB-312180.pdf + (Leopold Kutter)
- File:Patent-AT-143783.pdf + (Leopold Kutter)
- File:Patent-CH-186582.pdf + (Leopold Kutter)
- File:Patent-DE-582622.pdf + (Leopold Kutter)
- File:Patent-AT-115523.pdf + (Leopold Kutter)
- File:Patent-DE-531249.pdf + (Leopold Kutter)
- File:Patent-DE-573413.pdf + (Leopold Kutter)
- File:Patent-DE-581704.pdf + (Leopold Kutter)
- File:Patent-CA-341601.pdf + (Leopold Kutter)
- File:Patent-GB-336878.pdf + (Leopold Kutter)
- File:Patent-FR-730201.pdf + (Leopold Kutter)
- File:Patent-FR-675368.pdf + (Leopold Kutter)
- File:Patent-GB-445752.pdf + (Leopold Kutter, Roman Heller)
- File:Patent-US-2092459.pdf + (Leopold Kutter, Roman Heller)
- File:Patent-GB-194895.pdf + (Leslie Roy Wade)
- File:Patent-FR-561704.pdf + (Leslie Roy Wade)
- File:Patent-US-1493833.pdf + (Leslie Roy Wade)
- File:Patent-DE-401710.pdf + (Leslie Roy Wade)
- File:Patent-GB-224084.pdf + (Leslie Roy Wade)
- File:Patent-GB-243110.pdf + (Leslie Roy Wade)
- File:Patent-FR-603093.pdf + (Leslie Roy Wade)
- File:Patent-CA-264967.pdf + (Leslie Roy Wade)
- File:Patent-CA-238293.pdf + (Leslie Roy Wade)
- File:Patent-AT-98903.pdf + (Leslie Roy Wade)
- File:Patent-US-844061.pdf + (Levi D. Van Valenburg)
- File:Patent-US-886095.pdf + (Levi D. Van Valenburg)
- File:Patent-US-1250533.pdf + (Levi D. Van Valenburg)
- File:Patent-GB-191103257.pdf + (Levi D. Van Valenburg)
- File:Patent-US-607398.pdf + (Lewis E. Waterman)
- File:Patent-US-293545.pdf + (Lewis E. Waterman)
- File:Patent-US-307735.pdf + (Lewis E. Waterman)
- File:Patent-US-559422.pdf + (Lewis E. Waterman)
- File:Patent-US-604690.pdf + (Lewis E. Waterman)
- 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-692009.pdf + (Lewis E. Waterman)
- File:Patent-GB-406073.pdf + (Lionel Gunsberg)
- File:Patent-FR-628272.pdf + (Lionel Gunsberg, Emanuel Feldorf)
- File:Patent-GB-273357.pdf + (Lionel Gunsberg, Emanuel Feldorf)
- 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-FR-25039E.pdf + (Louis Badois)
- File:Patent-FR-527150.pdf + (Louis Badois)
- File:Patent-FR-623258.pdf + (Louis Badois)
- File:Patent-FR-764787.pdf + (Louis Badois)
- File:Patent-FR-574637.pdf + (Louis Badois et Société Anonyme La Plume d'Or)
- File:Patent-DE-440614.pdf + (Louis Badois und Société Anonyme La Plume d'Or)
- File:Patent-GB-225200.pdf + (Louis Badois, La Plume d'Or)
- File:Patent-US-D151989.pdf + (Louis Marx & Company)
- 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-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-1940223.pdf + (Lucifer J. Most)
- File:Patent-US-1195709.pdf + (Lucifer J. Most)
- File:Patent-US-1409616.pdf + (Luigi Taddeo)
- File:Patent-US-2258841.pdf + (Luis Lang)
- 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-716489.pdf + (Mabie Todd and Bard)
- File:Patent-US-1822168.pdf + (Mabie, Todd & Co.)
- File:Patent-US-1822167.pdf + (Mabie, Todd & Co.)
- File:Patent-US-1551604.pdf + (Mabie, Todd & Co.)
- File:Patent-US-1822166.pdf + (Mabie, Todd & Co.)
- File:Patent-US-1758199.pdf + (Mabie, Todd & Co.)
- File:Patent-US-1809985.pdf + (Mabie, Todd & Co.)
- File:Patent-US-1489590.pdf + (Mabie, Todd & Company)
- File:Patent-GB-729639.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-679783.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-729729.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-656673.pdf + (Mabie, Todd & Company Limited)
- File:Patent-US-1321188.pdf + (Mabie, Todd & Company Limited)
- File:Patent-US-2554641.pdf + (Mabie, Todd & Company Limited)
- File:Patent-US-1954952.pdf + (Mabie, Todd & Company Limited)
- File:Patent-US-1551601.pdf + (Mabie, Todd & Company Limited)
- File:Patent-US-2579342.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-595652.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-390585.pdf + (Mabie, Todd & Company Limited)
- File:Patent-FR-554761.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-238288.pdf + (Mabie, Todd & Company Limited)
- File:Patent-DE-437904.pdf + (Mabie, Todd & Company Limited)
- File:Patent-CH-148515.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-345712.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-359200.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-373756.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-435482.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-451275.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-479937.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-480717.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-480965.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-474893.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-514513.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-527422.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-575341.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-616010.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-623767.pdf + (Mabie, Todd & Company Limited)
- File:Patent-FR-989530.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-184071.pdf + (Mabie, Todd & Company Limited)
- File:Patent-FR-693093.pdf + (Mabie, Todd & Company Limited)
- File:Patent-FR-734273.pdf + (Mabie, Todd & Company Limited)
- File:Patent-CH-162422.pdf + (Mabie, Todd & Company Limited)
- File:Patent-DE-588550.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-621822.pdf + (Mabie, Todd & Company Limited)
- File:Patent-GB-635144.pdf + (Mabie, Todd & Company Limited)
- File:Patent-US-2056055.pdf + (Mabie, Todd & Company Limited)
- File:Patent-CA-327288.pdf + (Mabie, Todd and Company)
- File:Patent-GB-348036.pdf + (Mabie, Todd and Company Limited)
- File:Patent-US-353399.pdf + (Marie Brown)
- File:Patent-US-374140.pdf + (Marie Brown)
- File:Patent-US-2603189.pdf + (Mario Segre)
- File:Patent-US-1825090.pdf + (Marion O. Reis, Selma T. McCorney)
- File:Patent-GB-420064.pdf + (Mark Sydney Finburgh)
- File:Patent-GB-416648.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-US-1268206.pdf + (Martin Borbeck, Henry A. Meyer, Eric A. Burgess)
- 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-1475954.pdf + (Marx Finstone)
- File:Patent-US-1475953.pdf + (Marx Finstone)
- File:Patent-US-1468025.pdf + (Marx Finstone)
- File:Patent-US-1301317.pdf + (Marx Finstone)
- File:Patent-US-1238657.pdf + (Marx Finstone)
- File:Patent-GB-265005.pdf + (Marx Finstone)
- File:Patent-IT-359772.pdf + (Massimo Zeme)
- File:Patent-US-1251421.pdf + (Maud C. Riesenberg)
- File:Patent-US-1249501.pdf + (Maud C. Riesenberg)
- File:Patent-US-D143049.pdf + (Maurice J. Waldinger)
- File:Patent-US-D095860.pdf + (Max M. Neuhoff)
- File:Patent-US-D163686.pdf + (Mendel Fried)
- File:Patent-FR-847613.pdf + (Mentmore Manufacturing Co Limited)
- File:Patent-US-2189696.pdf + (Mentmore Manufacturing Co Limited)
- File:Patent-CH-215680.pdf + (Mentmore Manufacturing Co Limited)
- File:Patent-US-2431015.pdf + (Mentmore Manufacturing Co. Limited)
- File:Patent-CH-247460.pdf + (Mentmore Manufacturing Co. Limited)
- File:Patent-GB-475970.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-GB-541190.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-GB-569286.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-GB-612956.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-FR-947791.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-DE-804411.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-US-2519966.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-DE-856273.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-FR-1042361.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-FR-1111133.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-GB-842854.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-GB-903560.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-FR-1207795.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-GB-903559.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-CH-352252.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-FR-1222185.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-CH-353996.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-GB-927251.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-FR-1222991.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-DE-1213295.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-US-2983254.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-GB-948431.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-GB-1017991.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-US-3116719.pdf + (Mentmore Manufacturing Company Limited)
- File:Patent-US-2154102.pdf + (Metal & Controls Corporation)
- File:Patent-US-2154103.pdf + (Metal & Controls Corporation)
- File:Patent-US-2127043.pdf + (Metal & Controls Corporation)
- File:Patent-US-D143508.pdf + (Milton Reynolds)
- File:Patent-US-D145586.pdf + (Milton Reynolds)
- File:Patent-US-1893130.pdf + (Mirko Chelazzi, Dino Frulli)
- File:Patent-GB-397736.pdf + (Mirko Chelazzi, Dino Frulli)
- File:Patent-FR-728038.pdf + (Mirko Chelazzi, Dino Frulli)
- File:Patent-US-1016166.pdf + (Modern Pen Company)
- File:Patent-US-1151980.pdf + (Modern Pen Company)
- File:Patent-US-1075815.pdf + (Modern Pen Company)
- File:Patent-DE-835414.pdf + (Montblanc-Simplo G.m.b.H.)
- File:Patent-US-2080372.pdf + (Montblanc-Simplo G.m.b.H.)
- File:Patent-US-2167815.pdf + (Montblanc-Simplo G.m.b.H.)
- File:Patent-US-2986119.pdf + (Montblanc-Simplo G.m.b.H.)
- File:Patent-DE-602807.pdf + (Montblanc-Simplo G.m.b.H.)
- File:Patent-DE-655438.pdf + (Montblanc-Simplo G.m.b.H.)
- File:Patent-DE-652405.pdf + (Montblanc-Simplo G.m.b.H.)
- File:Patent-DE-669115.pdf + (Montblanc-Simplo G.m.b.H.)
- File:Patent-DE-610352.pdf + (Montblanc-Simplo G.m.b.H.)
- File:Patent-DE-602919.pdf + (Montblanc-Simplo G.m.b.H.)
- File:Patent-DE-664007.pdf + (Montblanc-Simplo G.m.b.H.)
- File:Patent-DE-652290.pdf + (Montblanc-Simplo G.m.b.H.)
- File:Patent-DE-746437.pdf + (Montblanc-Simplo G.m.b.H.)
- File:Patent-DE-680292.pdf + (Montblanc-Simplo G.m.b.H.)
- File:Patent-DE-741772.pdf + (Montblanc-Simplo G.m.b.H.)
- File:Patent-DE-689598.pdf + (Montblanc-Simplo G.m.b.H.)
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