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Patents > Tech fields : ornithopter or propellers & Number of text pages: 1-2

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None (434) · Budapest (20) · Seine (14) · Paris (10) · Cantal (3) · London (3) · Berlin (3) · Massiac (3) · Basse-Pyrénées (3) · Ain (2) · Maine (2) · South Portland, Maine (2) · Nord (2) · Cumberland county, ME (2)
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Supplementary to patent:
None (294) · Patent FR-1910-423792 (7) · Patent FR-1911-430455 (6) · Patent FR-1908-405961 (5) · Patent FR-1910-424987 (4) · Patent DE-1911-251309 (4) · Patent FR-1912-446040 (4) · Patent DE-1910-236694 (3) · Patent DE-1910-06-18 Carl Hanschke (3) · Patent AT-1909-48421 (3) · Patent DE-1909-220044 (3) · Patent FR-1910-414695 (3)
Related to aircraft:
Patent agent:
None (196) · Armengaud jeune (32) · None (27) · L. Chassevent (9) · Boult, Wade & Tennant (8) · Marks & Clerk (8) · J. Bonnet-Thirion (7) · J. Germain (7) · De Bongé (7) · Y. Rabilloud et fils (7) · Charles Dony (6) · Munn & Co. (6) · Dom. Casalonga (6) · E. Blétry (6) · Schwab (5) · H. Bœttcher fils (5) · Paul Caquet (5) · Hippolyte Josse (5)
National tech categories:
FR 6.4 (184) · None (92) · HU V/h (56) · FR 6.2 (38) · AT 77d (27) · USPC 244/22 (10) · DE 77h.10 (8) · DE 77 (8) · DE 77h.6 (7) · FR 6.3 (6) · FR 5.8 (4) · USPC 244/64 (4) · FR 5.3 (3) · NL 62 (3) · DE 77h.5 (3)
IPCs:
None (182) · IPC B64C11/00 (43) · IPC B64C39/00 (27) · IPC B64C11/20 (26) · IPC B64C33/02 (22) · IPC B64C11/04 (20) · IPC B63H1/12 (17) · IPC B64C11/16 (16) · IPC B64C23/00 (10) · IPC B64C33/00 (10) · IPC B64C27/04 (10) · IPC B64B1/00 (8) · IPC B64C17/00 (7) · IPC B64D35/04 (7) · IPC B64C1/00 (6) · IPC B64C11/24 (6) · IPC B64C11/36 (4)
CPCs:
None (119) · CPC B64C33/02 (36) · CPC B64C11/006 (29) · CPC B64C11/16 (21) · CPC B64C39/00 (20) · CPC B64C11/04 (20) · CPC B64C11/20 (16) · CPC B64C11/00 (16) · CPC B63H1/26 (14) · CPC B64C2700/6295 (11) · CPC B64C11/205 (11) · CPC B64C33/00 (11) · CPC B64C23/005 (10) · CPC B64B1/00 (10) · CPC B64C11/48 (8) · CPC B64D35/04 (8) · CPC B64C17/00 (7) · CPC B64C2700/6274 (7) · CPC B64C11/24 (7)
First filing:
Citations from after 1930:
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