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Patents > Grant date: 1911 & National tech categories : FR 6.4 or USPC 244/15

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Tech fields:
Airplane (188) · Stability (104) · design (90) · construction (50) · None (49) · Wings (48) · frame (48) · LTA (48) · aerodynamics (43) · propellers (41) · control (37) · propulsion (32) · automatic stability (30) · subsystem (28) · lift (26) · landing (26) · wheels (25) · hybrid (21)
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Supplementary to patent:
None (285) · Patent FR-1909-420322 (6) · Patent BE-1909-219837 (2) · Patent IT-1911-06-13 Guido Castagneris (2) · Patent FR-1911-429078 (2) · Patent FR-1910-430552 (2) · Patent FR-1910-429307 (2) · Patent FR-1910-427818 (2) · Patent FR-1910-423998 (2) · Patent FR-1910-417989 (2) · Patent FR-1910-414004 (2) · Patent FR-1907-373818 (2) · Patent DE-1910-04-04 August Wendtland (2) · Patent FR-1910-420958 (2)
Related to aircraft:
Patent agent:
None (49) · Armengaud jeune (39) · None (28) · J. Bonnet-Thirion (24) · E. Blétry (17) · L. Chassevent (16) · Hippolyte Josse (12) · G. Petiau (11) · Boramé et Julien (10) · P. Follin (10) · Dupont et Elluin (9) · de Bongé (9) · Charles Dony (9) · J. Germain (8) · Rigot et Prévost (8) · G. de Mestral et F. Harlé (7) · C. Blétry (7) · Schwab (7)
National tech categories: (Click arrow to add another value)
IPCs:
IPC B64C17/00 (89) · IPC B64C1/00 (75) · IPC B64C39/00 (50) · IPC B64B1/00 (22) · None (18) · IPC B64C23/00 (15) · IPC B64B1/58 (14) · IPC B64C3/38 (14) · IPC B64C25/00 (14) · IPC B64C3/00 (13) · IPC B64C17/06 (13) · IPC B64C11/00 (11) · IPC B64C33/02 (9) · IPC B64C13/00 (8) · IPC B64C3/54 (7) · IPC B64D17/00 (5)
CPCs:
CPC B64C17/00 (95) · CPC B64C39/00 (41) · CPC B64C2700/6218 (36) · CPC B64C2700/6295 (26) · CPC B64C2700/6212 (21) · CPC B64B1/00 (20) · CPC B64C23/005 (15) · CPC B64B1/58 (14) · CPC B64C1/00 (14) · CPC B64C17/06 (13) · CPC B64C2700/6214 (13) · CPC B64C3/00 (13) · CPC B64C25/06 (12) · CPC B64F2700/6226 (11) · CPC B64C33/02 (11) · CPC B64C2700/6274 (11) · CPC B64C13/00 (11) · CPC B64C3/385 (10) · CPC B64C2700/6228 (9)
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Citations from after 1930:
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