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Patents > Grant date: 1912 & National tech categories : FR 6.2 or None

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Tech fields:
None (132) · airplane (52) · stability (37) · Propulsion (37) · propellers (29) · Design (26) · frame (23) · wings (19) · control (18) · aerodynamics (16) · LTA (16) · construction (14) · navigation (14) · subsystem (13) · Propeller (13) · automatic stability (11) · sustentation (9) · steering (9) · rudder (8)
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Supplementary to patent:
None (209) · Patent FR-1910-423792 (4) · Patent FR-1910-424987 (3) · Patent GB-1911-12188 (3) · Patent US-1912-1033662 (2) · Patent FR-1911-430455 (2) · Patent FR-1911-446282 (2) · Patent BE-1910-12-31 Léon Dangy (2)
Related to aircraft:
Patent agent:
None (134) · Marks & Clerk (20) · Boult, Wade & Tennant (14) · Haseltine, Lake & Co. (13) · Wheatley & Mackenzie (7) · None (7) · W. P. Thompson & Co. (6) · S. Sokal (4) · Jensen & Son (4) · Abel & Imray (4) · Johnsons & Willcox (3) · Dom. Casalonga (3) · J. S. Withers & Spooner (3) · A. M. & William Clark (3)
National tech categories: (Click arrow to add another value)
IPCs:
None (158) · IPC B64C39/00 (19) · IPC B64C1/00 (14) · IPC B64C17/00 (14) · IPC B64C11/00 (11) · IPC B64C17/06 (7) · IPC B64C3/54 (7) · IPC B63H1/12 (6) · IPC B64C3/56 (5) · IPC B64B1/00 (4) · IPC B64C25/00 (4) · IPC B64C33/02 (4) · IPC B64C11/16 (4) · IPC B64C35/00 (3) · IPC B64C3/38 (3) · IPC B64C13/00 (3) · IPC B64B1/40 (3)
CPCs:
CPC B64C17/00 (34) · CPC B64C2700/6295 (26) · CPC B64C39/00 (26) · None (22) · CPC B64C11/006 (15) · CPC B64C2700/6218 (11) · CPC B64C33/02 (10) · CPC B64C17/06 (9) · CPC B64C23/005 (9) · CPC B64C2700/6214 (8) · CPC B64B1/00 (8) · CPC B64C2700/6256 (7) · CPC B64C2700/6216 (7) · CPC B64C13/00 (7) · CPC B64C2700/6281 (7) · CPC B63H1/12 (7) · CPC B64C3/56 (6) · CPC B64C3/54 (6) · CPC B64C2700/6212 (6) · CPC B64C3/385 (6)
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