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Patents > Year granted: 1912 & Granted: Yes & Number of figures: 3-4

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Tech fields:
airplane (117) · stability (56) · design (42) · frame (38) · None (35) · wings (30) · propulsion (29) · subsystem (28) · propellers (24) · LTA (24) · construction (23) · navigation (21) · automatic stability (21) · control (18) · landing (16) · piloting (16) · Aerodynamics (16) · rudder (15) · safety (15) · steering (14)
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None (82)
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Supplementary to patent:
None (184) · Patent BE-1911-04-14 Lucien-Constant-Joseph Harel (3) · Patent BE-1911-05-15 Georges de Bothezat (3) · Patent BE-1910-12-31 Léon Dangy (3) · Patent CH-1910-54251 (2) · Patent BE-1911-02-02 Leonardo Torres Quevedo (2) · Patent DE-1909-06-09 Romeo Wankmüller (2) · Patent FR-1910-426487 (2) · Patent US-1910-1041876 (2) · Patent FR-1910-423792 (2) · Patent US-1911-1009048 (2) · Patent FR-1910-422033‎ (2) · Patent BE-1910-12-28-Muehter (2) · Patent US-1910-993987 (2) · Patent BE 1911-04-07 Bollekens frères (2)
Related to aircraft:
Patent agent:
None (78) · None (12) · L. Chassevent (9) · Marks & Clerk (9) · Armengaud jeune (8) · Boult, Wade & Tennant (6) · J. Bonnet-Thirion (5) · Charles Dony (5) · Victor J. Evans (5) · Weismann et Marx (5) · Dupont et Elluin (4) · P. Follin (3) · Gaston Rose (3) · V. Matray (3) · Ch. Mardelet (3) · Schwab (3) · Wheatley & Mackenzie (3)
National tech categories:
FR 6.4 (111) · None (58) · AT 77d (12) · HU V/h (8) · DE 77h.5 (8) · USPC 244/45R (6) · DE 77h.6 (4) · RU Group V (3) · USPC 244/76R (3) · FR 5.8 (3) · USPC 244/99 (3) · CH 129b (3)
IPCs:
None (97) · IPC B64C39/00 (24) · IPC B64C17/00 (22) · IPC B64C1/00 (20) · IPC B64C25/00 (10) · IPC B64B1/00 (7) · IPC B64C3/00 (7) · IPC B64C35/00 (7) · IPC B64C11/00 (6) · IPC B64D17/00 (5) · IPC B64C13/00 (5) · IPC B64C23/00 (4) · IPC B64C3/38 (4) · IPC B64C17/06 (3) · IPC B64C11/16 (3) · IPC B64C3/56 (3) · IPC B64C33/02 (3) · IPC B64D35/06 (3)
CPCs:
None (46) · CPC B64C17/00 (29) · CPC B64C2700/6295 (15) · CPC B64C39/00 (13) · CPC B64C2700/6218 (9) · CPC B64C13/00 (9) · CPC B64C3/385 (9) · CPC B64B1/00 (8) · CPC B64C11/006 (8) · CPC B64C39/08 (7) · CPC B64C3/00 (7) · CPC B64D17/00 (6) · CPC B64C23/005 (6) · CPC B64F2700/6226 (6) · CPC B64C25/06 (5) · CPC B64C17/06 (5) · CPC B64C35/00 (5)
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