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Patents > Tech fields : hybrid or propeller shaft & Granted: Yes

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Supplementary to patent:
None (310) · Patent BE-1909-214032 (33) · Patent BE-1907-198483 (4) · Patent BE-1913-255172 (4) · Patent FR-1908-407090 (4) · Patent DE-1896-98109 (3) · Patent AT-1909-40038 (3) · Patent BE-1908-Bot-Lallemand (3) · Patent US-1908-922952 (3) · Patent US-1909-1137533 (3) · Patent FR-1899-292828 (3) · Patent FR-1909-410140 (3) · Patent FR-1915-478440 (3)
Related to aircraft:
Patent agent:
None (160) · A. Wunderlich & Cie, Ingénieurs-Conseils (34) · None (15) · Armengaud jeune (11) · Munn & Co. (10) · Victor J. Evans (8) · J. Bonnet-Thirion (7) · G. de Mestral et F. Harlé (7) · Schwab (6) · Haseltine, Lake & Co. (5) · John P. Tarbox (4) · J. Germain (4) · Verhaeghen (4)
National tech categories:
FR 6.4 (128) · None (82) · BE K (61) · FR 6.3 (15) · HU V/h (14) · USPC 244/6 (9) · USPC 244/64 (7) · USPC 244/22 (7) · USPC 244/11 (7) · RU Group V (7) · USPC 244/25 (6) · DE 77h (6) · DE 77h.5 (5) · USPC 244/66 (5) · AT 77d (5) · AU 90.3 (4) · DE 77 (4) · GB 4 propel & steer (4) · USPC 244/28 (4) · USPC 244/218 (4)
IPCs:
None (263) · IPC B64B1/00 (38) · IPC B64C23/00 (32) · IPC B64C27/04 (18) · IPC B64C39/00 (17) · IPC B64C35/00 (15) · IPC B64C33/02 (9) · IPC B64B1/58 (9) · IPC B64C33/00 (8) · IPC B64C27/00 (6) · IPC B64C1/00 (5) · IPC B64C17/00 (5) · IPC B64C29/00 (4) · IPC B64C3/00 (3) · IPC B64C3/38 (3) · IPC B64C3/56 (3) · IPC B64C31/04 (3) · IPC B64C17/06 (3) · IPC B64C11/00 (3) · IPC B64B1/40 (3)
CPCs:
None (167) · CPC B64B1/00 (53) · CPC B64C23/005 (48) · CPC B64C35/00 (20) · CPC B64C2700/6274 (19) · CPC B64C33/02 (18) · CPC B64C33/00 (14) · CPC B64C39/005 (13) · CPC B64C27/04 (12) · CPC B64B1/58 (12) · CPC B64C2700/6281 (11) · CPC B64C39/00 (10) · CPC B64C2700/6295 (6) · CPC B64C27/00 (5) · CPC B64C3/56 (5)
First filing:
Citations from after 1930:
Number of diagram pages:

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