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Patents > Inventor country: FR & Tech fields : hybrid or lift or propellers

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Supplementary to patent:
None (365) · Patent FR-1908-392672 (11) · Patent FR-1911-430455 (10) · Patent FR-1910-423792 (7) · Patent FR-1841-9265 (6) · Patent FR-1908-405961 (5) · Patent FR-1908-407090 (4) · Patent FR-1910-424987 (4) · Patent DE-1911-251309 (4) · Patent BE-1910-230887 (4) · Patent BE-1911-04-14 Lucien-Constant-Joseph Harel (4) · Patent FR-1909-401714 (4)
Related to aircraft:
Patent agent:
None (163) · Armengaud jeune (80) · None (37) · J. Bonnet-Thirion (15) · Boult, Wade & Tennant (13) · Weismann et Marx (13) · Dom. Casalonga (12) · J. Germain (11) · G. de Mestral et F. Harlé (11) · Lavoix et Mosès (9) · E. Blétry (9) · L. Chassevent (9) · Hippolyte Josse (9) · Y. Rabilloud et fils (8) · Dupont et Elluin (8) · Charles Dony (8) · M. Zérolo (7) · Paul Caquet (7)
National tech categories:
FR 6.4 (351) · None (85) · FR 6.2 (51) · BE K (36) · FR 6.3 (36) · HU V/h (15) · FR 6 (8) · FR 5 (5) · DE 77h.5 (5) · FR 6.1 (4) · FR 5.3 (4) · FR 5.8 (4) · RU Group V (3)
IPCs:
None (143) · IPC B64C39/00 (47) · IPC B64C11/00 (41) · IPC B64C23/00 (31) · IPC B64B1/00 (30) · IPC B64C1/00 (27) · IPC B63H1/12 (21) · IPC B64C17/00 (20) · IPC B64C27/04 (18) · IPC B64C11/04 (16) · IPC B64C11/16 (15) · IPC B64C35/00 (14) · IPC B64C3/38 (11) · IPC B64D35/04 (11) · IPC B64C3/00 (10) · IPC B64C33/02 (10) · IPC B64B1/58 (10) · IPC B64C3/54 (10) · IPC B64C13/00 (9)
CPCs:
None (123) · CPC B64C39/00 (37) · CPC B64C23/005 (32) · CPC B64B1/00 (29) · CPC B64C11/006 (24) · CPC B64C2700/6295 (21) · CPC B64C2700/6274 (21) · CPC B64C17/00 (21) · CPC B64C11/16 (18) · CPC B64C11/04 (16) · CPC B64C11/00 (14) · CPC B64D35/04 (12) · CPC B64C33/02 (12) · CPC B64C13/00 (12) · CPC B64C3/385 (11) · CPC B64C35/00 (11) · CPC B63H1/26 (11) · CPC B64C2700/6281 (11)
First filing:
Citations from after 1930:
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