Drilldown: Patents

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Patents > Tech fields : hybrid or lift or propellers

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Inventor country:
FR (634) · US (264) · DE (198) · GB (148) · BE (99) · HU (84) · AT (63) · None (47) · IT (29) · RU (20) · RO (17) · CA (16) · AU (13) · CH (9) · AH (8) · NZ (7) · HR (6) · IE (5) · DK (5)
Applicant firm:
None (1510) · A. Wunderlich & Cie, Ingénieurs-Conseils (36) · British and Colonial Aeroplane Co. (6) · Alphonse Tellier et Cie (5) · Daimler Motoren-Gesellschaft (5) · Jacob Lohner & Co. (4) · Borrmann and Kaerting (3) · Westinghouse Electric & Manufacturing Company (3) · Allgemeine Elektricitäts-Gesellschaft (3) · Aktiebolaget Aviatorer (3) · Motorluftschiff Studiengesellschaft m.b.H (3)
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National tech categories:
FR 6.4 (521) · None (401) · BE K (122) · HU V/h (121) · FR 6.2 (62) · FR 6.3 (45) · AT 77d (37) · DE 77h.5 (13) · USPC 244/6 (11) · CH 129b (10) · FR 6 (10) · DE 77h.6 (10) · USPC 244/64 (9) · DK 77 (9) · USPC 244/22 (8) · USPC 244/11 (8) · RU Group V (8) · DE 77h (7) · USPC 244/35R (7)
IPCs:
None (757) · IPC B64C39/00 (89) · IPC B64C11/00 (74) · IPC B64C23/00 (58) · IPC B64B1/00 (56) · IPC B64C1/00 (43) · IPC B64C17/00 (40) · IPC B64C27/04 (35) · IPC B63H1/12 (26) · IPC B64C35/00 (25) · IPC B64C11/20 (24) · IPC B64C11/04 (24) · IPC B64C33/02 (22) · IPC B64C11/16 (22) · IPC B64C3/38 (18) · IPC B64C33/00 (16) · IPC B64C3/52 (15) · IPC B64C3/54 (14) · IPC B64C13/00 (14) · IPC B64B1/58 (14)
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Citations from after 1930:
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