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Patents > Tech fields : propellers or steam & First filing: Yes

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Supplementary to patent:
None (334) · Patent RU-1905-Rebikov (2) · Patent DE-1907-214228 (2) · Patent FR-1916-502839 (2)
Related to aircraft:
Patent agent:
None (130) · None (16) · Armengaud jeune (15) · Boult, Wade & Tennant (9) · Marks & Clerk (6) · Weismann et Marx (5) · H. Bœttcher fils (5) · Y. Rabilloud et fils (4) · G. de Mestral et F. Harlé (4) · Arthur C. Downing (4) · J. Bonnet-Thirion (4) · H. D. Fitzpatrick & Co. (4) · Lavoix et Mosès (4) · Haseltine, Lake & Co. (4) · Charles Dony (4)
National tech categories:
None (140) · FR 6.4 (103) · HU V/h (26) · BE K (16) · FR 6.2 (13) · AT 77d (8) · DE 77h.6 (5) · FR 6.3 (4) · USPC 244/23R (3) · USPC 244/50 (3) · USPC 244/65 (3) · FR 5.3 (3) · USPC 416/194 (3) · USPC 244/233 (2) · USPC 244/17.21 (2) · GB 4 (2) · USPC 244/26 (2) · FR 6.1 (2) · FR 5.8 (2)
IPCs:
None (138) · IPC B64C11/00 (34) · IPC B64C39/00 (24) · IPC B64C11/20 (14) · IPC B64C11/04 (13) · IPC B64C11/16 (12) · IPC B64C17/00 (10) · IPC B64C23/00 (10) · IPC B63H1/12 (9) · IPC B64C1/00 (9) · IPC B64B1/00 (7) · IPC B64C27/04 (6) · IPC B64C11/30 (5) · IPC B64C13/00 (4) · IPC B64D35/04 (4) · IPC B64D27/00 (4)
CPCs:
None (79) · CPC B64C11/006 (21) · CPC B64C11/16 (15) · CPC B64C39/00 (15) · CPC B64C11/04 (13) · CPC B64C11/00 (13) · CPC B64C23/005 (12) · CPC B64C17/00 (11) · CPC B64C13/00 (11) · CPC B64C11/20 (10) · CPC B64B1/00 (9) · CPC B64C11/48 (9) · CPC B64C2700/6274 (8) · CPC B64C2700/6218 (7) · CPC B64C2700/6295 (6) · CPC B63H1/12 (6) · CPC B63H1/26 (6)
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