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Patents > Tech fields : propellers or subsystem & Number of text pages: 3-4

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None (246) · Patent DE-1907-214228 (4) · Patent US-1909-970771 (4) · Patent IT-1910-10-17 Carlo Navaro (4) · Patent GB-1908-4519 (3) · Patent FR-1907-377174 (3)
Related to aircraft:
Patent agent:
None (128) · Armengaud jeune (15) · Weismann et Marx (13) · Boult, Wade & Tennant (11) · Marks & Clerk (10) · None (8) · J. Bonnet-Thirion (8) · Haseltine, Lake & Co. (8) · G. de Mestral et F. Harlé (7) · E. Blétry (6) · Herbert Haddan & Co. (5) · Lavoix et Mosès (5) · Schwab (5) · Brandon frères (5) · Dupont et Elluin (4) · C. Blétry (4) · E. Blum & Co. (4)
National tech categories:
FR 6.4 (132) · None (119) · HU V/h (47) · FR 6.2 (17) · CH 129b (8) · AT 77d (6) · DK 77 (4) · FR 6.3 (3) · DE 77h.6 (3) · USPC 244/50 (3) · USPC 244/125 (2) · CH 115 (2) · NL 62 (2) · GB 4 propel & steer (2) · USPC 244/26 (2) · FR 5.3 (2) · FR 6.1 (2) · USPC 244/6 (2) · USPC 244/65 (2) · USPC 244/80 (2)
IPCs:
None (138) · IPC B64C39/00 (23) · IPC B64C11/00 (19) · IPC B64C17/00 (18) · IPC B64C1/00 (17) · IPC B64C23/00 (13) · IPC B64C11/36 (9) · IPC B64C27/04 (7) · IPC B64C13/00 (7) · IPC B63H1/12 (7) · IPC B64C33/02 (7) · IPC B64C11/16 (6) · IPC B64C35/00 (6) · IPC B64C3/00 (6) · IPC B64C11/30 (5) · IPC B64D27/00 (5) · IPC B64B1/00 (5)
CPCs:
None (101) · CPC B64C17/00 (21) · CPC B64C23/005 (16) · CPC B64C39/00 (15) · CPC B64C2700/6274 (12) · CPC B64C11/006 (11) · CPC B64C11/36 (10) · CPC B64C2700/6218 (9) · CPC B64C13/00 (8) · CPC B64C33/02 (8) · CPC B64C11/00 (7) · CPC B64C2700/6295 (7) · CPC B64C11/16 (7) · CPC B63H2001/122 (6) · CPC B64C3/00 (6) · CPC B64B1/00 (6)
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