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Patents > National tech categories : FR 6.4 or USPC 244/30 & Number of diagram pages: 2-4

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Tech fields:
None (198) · Airplane (97) · stability (58) · LTA (53) · design (48) · frame (45) · propulsion (38) · control (35) · wings (35) · construction (33) · navigation (25) · propellers (25) · Subsystem (20) · automatic stability (19) · hybrid (17) · whole (14) · flapping (14) · helicopter (14)
Full specification filed date:
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Supplementary to patent:
None (310) · Patent FR-1908-396249 (4) · Patent FR-1908-401308 (3) · Patent IT-1913-03-20 Vigilio Baldo (3) · Patent BE-1912-08-13-Panian (2) · Patent FR-1908-396470 (2) · Patent FR-1916-491738 (2)
Related to aircraft:
Patent agent:
None (68) · Armengaud jeune (27) · None (22) · Lavoix et Mosès (19) · Weismann et Marx (17) · Brandon frères (15) · J. Bonnet-Thirion (13) · Boramé et Julien (12) · L. Chassevent (10) · Dom. Casalonga (10) · J. Germain (10) · J. Bonnet-Thirion et Breton (9) · E. Blétry (8) · M. Zerolo (7) · Matray freres et Cie (7) · Charles Dony (7) · Schwab (7) · Rigot et Prévost (7)
National tech categories: (Click arrow to add another value)
IPCs:
IPC B64C17/00 (67) · IPC B64C39/00 (67) · IPC B64C1/00 (52) · IPC B64B1/00 (35) · IPC B64C23/00 (31) · None (27) · IPC B64C3/38 (22) · IPC B64C33/02 (22) · IPC B64C35/00 (19) · IPC B64C11/00 (17) · IPC B64C27/04 (14) · IPC B64B1/58 (11) · IPC B64C13/00 (11) · IPC B64C17/06 (10) · IPC B64C33/00 (9) · IPC B64C3/54 (9) · IPC B64C25/00 (8) · IPC B64C3/56 (7) · IPC B64C3/00 (6) · IPC B64C3/52 (6)
CPCs:
CPC B64C17/00 (69) · CPC B64C39/00 (50) · CPC B64B1/00 (44) · CPC B64C2700/6295 (40) · CPC B64C23/005 (32) · CPC B64C2700/6218 (27) · CPC B64C33/02 (24) · CPC B64C2700/6274 (23) · CPC B64C2700/6212 (22) · CPC B64C3/385 (19) · CPC B64C35/00 (17) · CPC B64C13/00 (13) · CPC B64C11/006 (12) · CPC B64C17/06 (11) · CPC B64B1/58 (11) · CPC B64C33/00 (10) · CPC B64C2700/6281 (10) · CPC B64C27/04 (9) · CPC B64C3/54 (9)
First filing:
Citations from after 1930:
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