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Patents > Year granted: 1910 & Inventor country : DE or FR or RO & First filing: Yes

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Tech fields:
None (77) · Airplane (66) · LTA (48) · Design (36) · control (33) · stability (31) · frame (28) · propulsion (23) · wings (19) · construction (17) · propellers (17) · aerodynamics (16) · balloon (16) · landing (15) · subsystem (14) · propeller (12) · automatic stability (12) · rudder (12) · monoplane (11) · navigation (11)
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Patent agent:
None (102) · J. Bonnet-Thirion (19) · Armengaud jeune (18) · None (18) · Charles Dony (11) · Weismann et Marx (11) · E. Blétry (10) · Lavoix et Mosès (7) · H. Bœttcher fils (6) · Schwab (5) · Boramé et Julien (4) · L. Chassevent (4) · Dom. Casalonga (4) · de Bongé (4) · Chassevent (4) · Charles Assi (3) · Brandon frères (3) · C. Blétry (3) · Herbert Haddan & Co. (3)
National tech categories:
FR 6.4 (203) · None (53) · FR 6.2 (6) · AT 77d (5) · DE 77h.15 (5) · DE 77h.10 (3) · DE 77h.6 (3) · DE 77h.5 (2) · FR 5.3 (2) · FR 20.1 (2) · DE 77h.7 (2) · USPC 244/97 (2) · DE 77h.4 (2) · DE 77h.3 (2)
IPCs:
None (56) · IPC B64C1/00 (26) · IPC B64C39/00 (24) · IPC B64C17/00 (24) · IPC B64C3/38 (20) · IPC B64B1/58 (17) · IPC B64B1/00 (14) · IPC B64C3/00 (10) · IPC B64C13/00 (9) · IPC B64C11/00 (9) · IPC B64C25/00 (8) · IPC B64C23/00 (8) · IPC B64C3/52 (7) · IPC B64C33/02 (6) · IPC B64C13/04 (4) · IPC B64C3/54 (4) · IPC B64C11/30 (4)
CPCs:
CPC B64C17/00 (25) · CPC B64C39/00 (22) · CPC B64B1/58 (21) · None (19) · CPC B64C2700/6295 (18) · CPC B64C3/385 (15) · CPC B64B1/00 (14) · CPC B64C1/00 (12) · CPC B64C3/00 (11) · CPC B64C13/00 (11) · CPC B64C2700/6256 (9) · CPC B64C2700/6218 (8) · CPC B64C33/02 (8) · CPC B64C25/62 (7) · CPC B64C3/52 (7) · CPC B64C11/006 (7) · CPC B64C23/005 (7)
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Citations from after 1930:
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