Drilldown: Patents

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

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Applicant firm:
None (369) · Westinghouse Electric & Manufacturing Company (6) · Luftschiffbau Schütte-Lanz (6) · Mercur Flugzeugbau (5) · AGO Flugzeugwerke G. m. b. H. (5) · Moteurs Salmson (5) · Allgemeine Elektricitäts-Gesellschaft (4) · Österreichische Daimler Motoren A. G. (4) · Zeppelin-Werke G.m.b.H. (4) · Luftfahrzeugbau Schütte-Lanz (4) · Rumpler-Werke G.m.b.H. in Berlin-Johannisthal (4) · Société des Avions Louis Bréguet (4)
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None (422) · Patent DE-1917-305040 (2) · Patent DE-1921-384750 (2) · Patent FR-1915-525800 (2)
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National tech categories:
None (266) · DE 77h.5 (54) · HU V/h (51) · DE 77h.6 (23) · DE 77h.9 (15) · FR 6.4 (13) · DE 77h.7 (11) · DE 77h.15 (9) · AT 77d (8) · NL 62 (8) · DE 77h.2 (5) · NL 62.7 (3) · NL 62.6 (3)
IPCs:
None (326) · IPC B64C3/00 (26) · IPC B64C17/00 (13) · IPC B64C1/00 (11) · IPC B64C11/00 (10) · IPC B64C35/00 (10) · IPC B64C11/20 (8) · IPC B64C13/00 (6) · IPC B64C3/18 (6) · IPC B64B1/00 (5) · IPC B64C23/00 (5) · IPC B64C1/06 (5) · IPC B64C11/04 (5) · IPC B64C27/04 (4) · IPC B64C3/38 (4) · IPC B64C11/34 (4) · IPC B64D7/02 (4)
CPCs:
None (97) · CPC B64C3/00 (41) · CPC B64C17/00 (31) · CPC B64C13/00 (21) · CPC B64C2700/6233 (19) · CPC B64C2700/6295 (18) · CPC B64C2700/6256 (17) · CPC B64C23/005 (17) · CPC B64C39/00 (16) · CPC B64C2700/6235 (13) · CPC B64C2700/6212 (13) · CPC B64C35/00 (12) · CPC B64C11/04 (12) · CPC B64C2700/6274 (11) · CPC B64B1/00 (10) · CPC B64C3/18 (10) · CPC B64C11/20 (10) · CPC B64C2700/6218 (9) · CPC B64C2001/0063 (9)
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