Drilldown: Patents

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Patents > Year granted: 1920 - 1929 & Inventor location: None & Patent agent: None

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None (314) · Luftschiffbau Schütte-Lanz (6) · AGO Flugzeugwerke G. m. b. H. (5) · Westinghouse Electric & Manufacturing Company (5) · Mercur Flugzeugbau (5) · Moteurs Salmson (5) · Rumpler-Werke G.m.b.H. in Berlin-Johannisthal (4) · Allgemeine Elektricitäts-Gesellschaft (4) · Zeppelin-Werke G.m.b.H. (4) · Société des Avions Louis Bréguet (4) · Österreichische Daimler Motoren A. G. (4)
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Supplementary to patent:
None (370) · Patent DE-1917-305040 (2) · Patent DE-1921-384750 (2) · Patent FR-1915-525800 (2)
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National tech categories:
None (220) · DE 77h.5 (52) · HU V/h (45) · DE 77h.6 (22) · DE 77h.9 (15) · DE 77h.7 (12) · FR 6.4 (11) · DE 77h.15 (9) · NL 62 (7) · AT 77d (7) · DE 77h.2 (5) · NL 62.7 (3)
IPCs:
None (275) · IPC B64C3/00 (24) · IPC B64C11/00 (10) · IPC B64C35/00 (10) · IPC B64C17/00 (10) · IPC B64C1/00 (9) · IPC B64C11/20 (8) · IPC B64C13/00 (6) · IPC B64C3/18 (6) · IPC B64C1/06 (5) · IPC B64C23/00 (5) · IPC B64C11/04 (5) · IPC B64B1/00 (5) · IPC B64C3/38 (4) · IPC B64C11/34 (4) · IPC B64D7/02 (4) · IPC B64C1/12 (4)
CPCs:
None (91) · CPC B64C3/00 (37) · CPC B64C17/00 (24) · CPC B64C13/00 (21) · CPC B64C2700/6256 (17) · CPC B64C2700/6233 (16) · CPC B64C2700/6295 (15) · CPC B64C39/00 (13) · CPC B64C2700/6235 (12) · CPC B64C35/00 (12) · CPC B64C11/04 (11) · CPC B64C2700/6212 (9) · CPC B64C11/20 (9) · CPC B64C23/005 (9) · CPC B64C3/18 (9) · CPC B64B1/00 (8) · CPC B64C3/185 (8) · CPC B64B1/58 (8) · CPC B64C2700/6218 (8)
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