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Elenco dei risultati
- 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-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-2935044.pdf + (Frederick R. Wittnebert)
- 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)
- File:Patent-US-2314563.pdf + (Herman K. Stempel)
- File:Patent-US-2110551.pdf + (Robert E. Freidlein)
- File:Patent-US-1507622.pdf + (Robert G. Pilkington)
- File:Patent-US-D178033.pdf + (Donald H. Young)
- File:Patent-US-D177359.pdf + (Donald H. Young)
- File:Patent-US-1344434.pdf + (Robert George Crombie Boa)
- File:Patent-US-2503043.pdf + (Robert Gruen)
- File:Patent-US-D177560.pdf + (Robert H. Ensign)
- File:Patent-US-D177369.pdf + (Robert H. Ensign)
- File:Patent-US-781649.pdf + (Robert H. Hamilton)
- File:Patent-US-897892.pdf + (Robert H. Hamilton)
- File:Patent-US-1527971.pdf + (Arthur Forsell)
- File:Patent-US-D147982.pdf + (Robert J. Lynn)
- File:Patent-GB-373756.pdf + (Robert Jasper Knowles)
- File:Patent-FR-814135.pdf + (Robert Jean Jacques Hallauer)
- File:Patent-BE-424772.pdf + (Robert Jean Jacques Hallauer)
- File:Patent-FR-799290.pdf + (Robert Jean Jacques Hallauer)
- File:Patent-US-3038506.pdf + (Robert L. Kuranz)
- File:Patent-US-61156.pdf + (Robert Macintyre Cameron)
- File:Patent-FR-1009170.pdf + (Robert Marie Émile Ernest Ferdinand de Riverieulx)
- File:Patent-DE-718495.pdf + (Heinrich Woringen)
- File:Patent-US-631824.pdf + (Robert P. Robinson)
- File:Patent-US-1567910.pdf + (Wenzel Franz Brynda)
- File:Patent-US-1773475.pdf + (Robert S. Casey)
- File:Patent-US-2219769.pdf + (Robert S. Dorfman)
- File:Patent-US-1317817.pdf + (Robert S. Ogilvy)
- File:Patent-US-1641096.pdf + (Robert T. Pollock)
- File:Patent-US-1657033.pdf + (Robert T. Pollock)
- File:Patent-US-1658940.pdf + (Robert T. Pollock)
- File:Patent-US-1671125.pdf + (Robert T. Pollock)
- File:Patent-US-1724106.pdf + (Robert T. Pollock)
- File:Patent-US-1724107.pdf + (Robert T. Pollock)
- File:Patent-US-1574929.pdf + (Robert T. Pollock)
- File:Patent-US-1574930.pdf + (Robert T. Pollock)
- File:Patent-US-800129.pdf + (Robert W. Gorham)
- File:Patent-US-2427068.pdf + (Robert W. Randolph)
- File:Patent-US-2427069.pdf + (Robert W. Randolph)
- File:Patent-US-2428854.pdf + (Robert W. Randolph)
- File:Patent-US-2454086.pdf + (Robert W. Randolph)
- File:Patent-US-2481874.pdf + (Robert W. Randolph)
- File:Patent-US-2528328.pdf + (Marlin S. Baker)
- File:Patent-US-2533082.pdf + (Marlin S. Baker)
- File:Patent-US-2645205.pdf + (Robert W. Randolph)
- File:Patent-US-2888908.pdf + (Robert W. Randolph)
- File:Patent-US-2889810.pdf + (Robert W. Randolph)
- File:Patent-US-1720471.pdf + (Rockel Alexander Fritsch)
- File:Patent-US-1390366.pdf + (Roderick J. Mackenzie)
- File:Patent-US-1775068.pdf + (Rodolfo Debenedetti)
- File:Patent-US-1714418.pdf + (Rodolfo Debenedetti)
- File:Patent-CA-287009.pdf + (Rodolfo Debenedetti)
- File:Patent-US-2004641.pdf + (Roger Blomley Watson)
- File:Patent-US-2526268.pdf + (Roger François Perraud)
- File:Patent-GB-623792.pdf + (Roger François Perraud)
- File:Patent-US-2956548.pdf + (Roger Perraud)
- File:Patent-CH-351863.pdf + (Roger Perraud)
- File:Patent-DE-447802.pdf + (Rokusaburo Namiki)
- File:Patent-US-2831460.pdf + (Roland L. Brannon)
- File:Patent-US-2949887.pdf + (Lynn P. Martin)
- File:Patent-DE-958993.pdf + (Rolf Pöhler)
- File:Patent-DE-820253.pdf + (Karl Ziegler)
- File:Patent-DE-802498.pdf + (Rolf Pöhler)
- File:Patent-US-2096044.pdf + (Roy B. Johns)
- File:Patent-US-685258.pdf + (Roy Conklin)
- File:Patent-US-745481.pdf + (Roy Conklin)
- File:Patent-US-814520.pdf + (Roy Conklin)
- File:Patent-US-799777.pdf + (Roy Conklin)
- File:Patent-US-756778.pdf + (Roy Conklin)
- File:Patent-US-836180.pdf + (Roy Conklin)
- File:Patent-US-1407552.pdf + (Rudolph Wm. Lotz)
- File:Patent-US-1263260.pdf + (Rudolph Wm. Lotz)
- File:Patent-US-1263261.pdf + (Rudolph Wm. Lotz)
- File:Patent-US-1005387.pdf + (Ruel W. Whitney)
- File:Patent-US-2030452.pdf + (Russel B. Kingman)
- File:Patent-US-1912774.pdf + (Russel B. Kingman)
- File:Patent-US-2061405.pdf + (Russel B. Kingman)
- File:Patent-US-2123427.pdf + (Russel B. Kingman)
- File:Patent-US-2025110.pdf + (Russel B. Kingman)
- File:Patent-US-2024229.pdf + (Russel B. Kingman)
- File:Patent-US-2011222.pdf + (Russel B. Kingman)
- File:Patent-US-1947092.pdf + (Russel B. Kingman)
- File:Patent-US-1964821.pdf + (Russel B. Kingman)
- File:Patent-US-1998930.pdf + (Russel B. Kingman)
- File:Patent-US-1978676.pdf + (Russel B. Kingman)
- File:Patent-US-1978675.pdf + (Russel B. Kingman)
- File:Patent-US-D089449.pdf + (Russel C. Parker)
- File:Patent-US-D087792.pdf + (Russel C. Parker)
- File:Patent-US-2187528.pdf + (Russel T. Wing)
- File:Patent-US-1284525.pdf + (Russell T. Wing)
- File:Patent-US-2282840.pdf + (Russell T. Wing)
- File:Patent-US-2360297.pdf + (Russell T. Wing)
- File:Patent-US-2428863.pdf + (Russell T. Wing)
- File:Patent-US-2483603.pdf + (Russell T. Wing)
- File:Patent-US-2512004.pdf + (Russell T. Wing)
- File:Patent-US-2581739.pdf + (Russell T. Wing)
- File:Patent-US-2581740.pdf + (Russell T. Wing)
- File:Patent-US-2509465.pdf + (Russell T. Wing)
- File:Patent-US-1104567.pdf + (Ruther W. Springer)
- File:Patent-US-1540416.pdf + (Ryosuke Namiki)
- File:Patent-US-1594319.pdf + (Ryosuke Namiki)
- File:Patent-US-1600293.pdf + (Ryosuke Namiki)
- File:Patent-US-2132313.pdf + (Ryosuke Namiki)
- File:Patent-US-2144296.pdf + (Ryosuke Namiki)
- File:Patent-US-992234.pdf + (Ryosuke Namiki)
- File:Patent-GB-488541.pdf + (Ryosuke Namiki)
- File:Patent-GB-191007952.pdf + (Ryosuke Namiki)
- File:Patent-GB-194751.pdf + (Ryosuke Namiki)
- File:Patent-GB-490096.pdf + (Ryosuke Namiki)
- File:Patent-GB-247038.pdf + (Ryosuke Namiki)
- File:Patent-US-2871825.pdf + (Ryujiro Uchida)
- File:Patent-GB-896958.pdf + (Ryujiro Uchida)
- File:Patent-US-3399946.pdf + (Sadao Tokorozawa)
- File:Patent-US-2325550.pdf + (Salomon M. Sager)
- File:Patent-US-1681954.pdf + (Salomon M. Sager)
- File:Patent-US-1816057.pdf + (Salomon M. Sager)
- File:Patent-US-1868257.pdf + (Salomon M. Sager)
- File:Patent-US-1876151.pdf + (Salomon M. Sager)
- File:Patent-US-1885862.pdf + (Salomon M. Sager)
- File:Patent-US-1886307.pdf + (Salomon M. Sager)
- File:Patent-US-2125957.pdf + (Salomon M. Sager)
- File:Patent-US-2035278.pdf + (Salomon M. Sager)
- File:Patent-US-D135448.pdf + (Salomon M. Sager)
- File:Patent-US-2019734.pdf + (Salomon M. Sager)
- File:Patent-US-2119796.pdf + (Salomon M. Sager)
- File:Patent-US-1902573.pdf + (Samuel A. Neidich)
- File:Patent-US-2513380.pdf + (Samuel E. Townsend)
- File:Patent-US-662796.pdf + (Samuel Kraus)
- File:Patent-US-2113633.pdf + (Herman K. Stempel)
- File:Patent-US-1540763.pdf + (Samuel V. Corona)
- File:Patent-US-D065636.pdf + (Samuel V. Corona)
- File:Patent-FR-552565.pdf + (Samuel Wade)
- File:Patent-DE-1092808.pdf + (Schau Wilhelm)
- File:Patent-CH-419896.pdf + (Seikichi Yanagita)
- File:Patent-DE-1274927.pdf + (Seikichi Yanagita)
- File:Patent-US-3203403.pdf + (Seikichi Yanagita)
- File:Patent-FR-960832.pdf + (Serge-Ernest Detanne)
- File:Patent-US-D094118.pdf + (Seth Chilton Crocker)
- File:Patent-US-D091765.pdf + (Seth Chilton Crocker)
- File:Patent-US-1181574.pdf + (Seth S. Crocker)
- File:Patent-US-678547.pdf + (Seth S. Crocker)
- File:Patent-US-1212744.pdf + (Seth S. Crocker)
- File:Patent-US-767208.pdf + (Seth S. Crocker)
- File:Patent-US-3280797.pdf + (Shunichi Nakata)
- File:Patent-US-2329996.pdf + (Silio Lubrani)
- File:Patent-US-2640297.pdf + (Soren S. Adams)
- File:Patent-US-1480690.pdf + (Stanley E. Peters)
- File:Patent-US-1459073.pdf + (Stanley E. Peters)
- File:Patent-US-1483675.pdf + (Stanley E. Peters)
- File:Patent-US-1825014.pdf + (Stanley E. Peters)
- File:Patent-US-629519.pdf + (Stephen J. Meyerpeter)
- File:Patent-US-1966369.pdf + (Steven G. Yates)
- File:Patent-US-1214310.pdf + (Stormont Josselyn)
- File:Patent-US-RE14397.pdf + (Stormont Josselyn)
- File:Patent-US-1567059.pdf + (Stormont Josselyn)
- File:Patent-US-2362948.pdf + (Walter D. Teague)
- File:Patent-GB-570091.pdf + (Eric Ernest Samuel Wade)
- File:Patent-GB-573545.pdf + (Eric Ernest Samuel Wade)
- File:Patent-US-2430023.pdf + (Sydney E. Longmaid)
- File:Patent-US-D115868.pdf + (Sydney E. Longmaid)
- File:Patent-US-1289921.pdf + (Sydney M. Rowe)
- File:Patent-US-1267288.pdf + (Tagiro Tanimura)
- File:Patent-US-3292593.pdf + (Tetsuo Furuya)
- File:Patent-US-1633111.pdf + (Theodor Kovacs)
- File:Patent-US-1633896.pdf + (Theodor Kovacs)
- File:Patent-US-1426200.pdf + (Theodor Kovacs)
- File:Patent-US-2766728.pdf + (Theodor Kovacs)
- File:Patent-US-1447790.pdf + (Theodor Kovacs)
- File:Patent-US-1544161.pdf + (Theodor Kovacs)
- File:Patent-US-1558553.pdf + (Theodor Kovacs)
- File:Patent-US-1661225.pdf + (Theodor Kovacs)
- File:Patent-US-1706616.pdf + (Theodor Kovacs)
- File:Patent-US-1750410.pdf + (Theodor Kovacs)
- File:Patent-US-1812536.pdf + (Theodor Kovacs)
- File:Patent-US-1842677.pdf + (Theodor Kovacs)
- File:Patent-US-1853731.pdf + (Theodor Kovacs)
- File:Patent-US-1902782.pdf + (Theodor Kovacs)
- File:Patent-US-1918404.pdf + (Theodor Kovacs)
- File:Patent-US-1959959.pdf + (Theodor Kovacs)
- File:Patent-US-2338947.pdf + (Theodor Kovacs)
- File:Patent-DE-828966.pdf + (Theodor Kovacs)
- File:Patent-US-2766729.pdf + (Theodor Kovacs)
- File:Patent-GB-270915.pdf + (Theodor Kovacs)
- File:Patent-US-1624554.pdf + (Theodor Kovacs)
- File:Patent-DE-443893.pdf + (Theodor Kovacs)
- File:Patent-US-2401167.pdf + (Theodor Kovacs)
- File:Patent-DE-406609.pdf + (Theodor Kovacs)
- File:Patent-GB-708633.pdf + (Theodor Kovacs)
- File:Patent-DE-447572.pdf + (Theodor Kovacs)
- File:Patent-NL-11429.pdf + (Theodor Kovacs)
- File:Patent-US-D160180.pdf + (Theodor Kovacs)
- File:Patent-FR-528716.pdf + (Theodor Kovacs)
- File:Patent-DE-366684.pdf + (Theodor Kovacs)
- File:Patent-DE-349410.pdf + (Theodor Kovacs)
- File:Patent-SE-59425.pdf + (Theodor Kovacs)
- File:Patent-GB-229928.pdf + (Theodor Kovacs)
- File:Patent-FR-585289.pdf + (Theodor Kovacs)
- File:Patent-DE-411787.pdf + (Theodor Kovacs)
- File:Patent-GB-220793.pdf + (Theodor Kovacs)
- File:Patent-FR-582950.pdf + (Theodor Kovacs)
- File:Patent-GB-713536.pdf + (Theodor Kovacs)
- File:Patent-DE-738888.pdf + (Theodor Kovacs)
- File:Patent-DE-941049.pdf + (Theodor Kovacs)
- File:Patent-DE-920051.pdf + (Theodor Kovacs)
- File:Patent-CH-307024.pdf + (Theodor Kovacs)
- File:Patent-DE-1008605.pdf + (Theodor Kovacs)
- File:Patent-AT-229755.pdf + (Theodor Kovacs)
- File:Patent-CH-341736.pdf + (Theodor Kovacs)
- File:Patent-FR-1045856.pdf + (Theodor Kovacs)
- File:Patent-FR-1152674.pdf + (Theodor Kovacs)
- File:Patent-GB-795902.pdf + (Theodor Kovacs)
- File:Patent-GB-732982.pdf + (Theodor Kovacs)
- File:Patent-US-2935969.pdf + (Theodor Kovacs)
- File:Patent-FR-1058739.pdf + (Theodor Kovacs)
- File:Patent-CH-318128.pdf + (Theodor Kovacs)
- File:Patent-NL-90322.pdf + (Theodor Kovacs)
- File:Patent-US-2891512.pdf + (Theodor Kovacs)
- File:Patent-DE-1010415.pdf + (Theodor Kovacs)
- File:Patent-BE-548110.pdf + (Theodor Kovacs)
- File:Patent-CH-343260.pdf + (Theodor Kovacs)
- File:Patent-FR-1149886.pdf + (Theodor Kovacs)
- File:Patent-GB-784388.pdf + (Theodor Kovacs)
- File:Patent-DE-349408.pdf + (Theodor Kovacs)
- File:Patent-DE-351930.pdf + (Theodor Kovacs)
- File:Patent-US-1645167.pdf + (George A. Theobald)
- File:Patent-US-D029964.pdf + (Theodore E. Smith)
- File:Patent-US-D098958.pdf + (Theodore J. Piazzoli)
- File:Patent-GB-215803.pdf + (Thomas Edward Ruddherham)
- File:Patent-US-2410423.pdf + (Thomas F. Brinson)
- File:Patent-FR-938710.pdf + (Thomas F. Brinson)
- File:Patent-CH-266126.pdf + (Thomas F. Brinson)
- File:Patent-US-122047.pdf + (Joseph Monaghan)
- File:Patent-GB-190804840.pdf + (Francis Charles Jarvis)
- File:Patent-FR-392740.pdf + (Francis Charles Jarvis)
- File:Patent-FR-411575.pdf + (Francis Charles Jarvis)
- File:Patent-GB-190918450.pdf + (Francis Charles Jarvis)
- File:Patent-GB-456888.pdf + (David Finburgh)
- File:Patent-US-784528.pdf + (Thomas P. Ambrose)
- File:Patent-US-794836.pdf + (Thomas P. Ambrose)
- File:Patent-US-795569.pdf + (Thomas P. Ambrose)
- File:Patent-US-1649142.pdf + (Thor Gustaf Thornblad)
- File:Patent-US-2902978.pdf + (Umberto Legnani)
- File:Patent-FR-1151914.pdf + (Umberto Legnani)
- File:Patent-FR-1156940.pdf + (Umberto Legnani)
- File:Patent-FR-1168064.pdf + (Umberto Legnani)
- File:Patent-FR-1197651.pdf + (Umberto Legnani)
- File:Patent-DE-1145054.pdf + (Umberto Legnani)
- File:Patent-GB-476971.pdf + (Vaclav Klimes)
- File:Patent-FR-807679.pdf + (Vaclav Klimes)
- File:Patent-DE-391847.pdf + (Vatroslav Lederer)
- File:Patent-DE-384550.pdf + (Vatroslav Lederer)
- File:Patent-US-2241850.pdf + (William J. Gillet)
- File:Patent-US-2521657.pdf + (Victor H. Severy)
- File:Patent-US-2489983.pdf + (Victor H. Severy)
- File:Patent-US-D137660.pdf + (Victor H. Severy)
- File:Patent-US-D138032.pdf + (Victor H. Severy)
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