Drilldown: Patents

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Patents > Tech fields : navigation or propellers & Filing date: 1900 - 1999 & Supplementary to patent : Patent BE-1907-199348 or Patent DE-1895-98580 or None

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Inventor country:
FR (315) · US (283) · DE (121) · GB (98) · HU (49) · AT (28) · BE (26) · IT (23) · None (22) · CA (12) · CH (9) · AH (8) · RO (8) · NL (6) · HR (5) · AU (5) · MX (4) · IE (4)
Applicant firm:
None (954) · Sperry Gyroscope Company (5) · Motorluftschiff Studiengesellschaft m.b.H (5) · Jacob Lohner & Co. (4) · Tarbox Safety Aircraft Company (4) · Westinghouse Electric & Manufacturing Company (3) · Borrmann and Kaerting (3) · Société Anonyme des Établissements Nieuport (2) · A. Wunderlich & Cie, Ingénieurs-Conseils (2) · Lang Propeller Limited (2) · Société anonyme des appareils d'aviation Hanriot (2) · Aéroplanes Morane-Saulnier (2)
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Assigned to:
None (973) · Sperry Gyroscope Company (5) · Tarbox Safety Aircraft Company (4) · 1 (3) · Westinghouse Electric & Manufacturing Company (3) · International Aeronautical Construction Company (2)
National tech categories:
FR 6.4 (241) · None (225) · HU V/h (62) · BE K (47) · FR 6.3 (28) · AT 77d (26) · FR 6.2 (25) · USPC 244/22 (14) · IT 8 (13) · USPC 244/90R (12) · USPC 244/66 (11) · USPC 244/51 (11) · DE 77h.5 (11) · USPC 244/6 (10) · USPC 244/80 (9) · USPC 244/233 (9) · DE 77h.6 (9) · USPC 244/97 (8) · USPC 244/13 (8)
IPCs:
None (476) · IPC B64B1/00 (53) · IPC B64C11/00 (48) · IPC B64C39/00 (45) · IPC B64C1/00 (19) · IPC B64C33/02 (18) · IPC B64C23/00 (17) · IPC CPC B64C13/00 (16) · IPC B64C11/04 (15) · IPC B64C17/00 (15) · IPC B64C11/20 (14) · IPC B64C11/16 (13) · IPC B63H1/12 (13) · IPC B64C27/04 (13) · IPC B64C13/00 (12) · IPC B64C3/38 (12) · IPC B64B1/58 (12) · IPC B64B1/62 (9) · IPC B64B1/40 (9) · IPC B64C33/00 (8)
First filing:
Citations from after 1930:

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