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Patents > National tech categories: None & CPCs : CPC B64C2700/6233 or CPC B64C39/00

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None (266) · airplane (39) · wings (25) · design (24) · frame (20) · construction (20) · stability (15) · whole (10) · lift (8) · fuselage (8) · biplane (8) · propellers (7) · propulsion (7) · aerodynamics (6) · monoplane (5) · automatic stability (5) · control (5)
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None (310) · Patent FR-1911-448337 (2) · Patent FR-1916-502839 (2)
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None (255) · Marks & Clerk (12) · Boult, Wade & Tennant (6) · Haseltine, Lake & Co. (5) · None (4) · Hyde & Heide (3) · W. P. Thompson & Co. (3) · Boult, Wade, and Tennant (3) · R. J. Urquhart (2) · J. S. Withers & Spooner (2) · George T. Millard (2) · Mewburn, Ellis & Pryor (2) · Herbert Haddan & Co. (2) · Abel & Imray (2) · Brewer & Son (2)
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