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Patents > Supplementary to patent: None & National tech categories : USPC 244/119 or None & CPCs : CPC B64C35/00 or CPC B64C39/00

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None (317) · airplane (17) · hydroaeroplane (16) · frame (12) · marine (10) · stability (9) · wings (9) · construction (8) · hydroplane (8) · design (8) · biplane (7) · whole (6) · hybrid (5) · propulsion (5) · Hydro-aeroplane (4) · aerodynamics (4) · control (4) · lift (4)
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None (310) · Marks & Clerk (9) · John P. Tarbox (9) · Brewer & Son (7) · Boult, Wade & Tennant (6) · Hyde & Heide (4) · Haseltine, Lake & Co. (4) · Abel & Imray (3) · George T. Millard (2) · W. P. Thompson & Co. (2) · Stanley, Popplewell & Co. (2) · None (2) · J. S. Withers & Spooner (2) · Warren S. Ostow (2) · Boult, Wade, and Tennant (2)
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