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Patents > National tech categories: None & CPCs : CPC B63H1/26 or CPC B64C39/00

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None (226) · airplane (30) · design (20) · frame (15) · stability (12) · wings (12) · construction (11) · whole (10) · propellers (8) · biplane (8) · propulsion (7) · lift (6) · marine (5) · fuselage (5) · HTA (4) · Aerodynamics (4) · monoplane (4) · automatic stability (4)
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None (253) · Patent FR-1916-502839 (2)
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None (209) · Marks & Clerk (11) · Boult, Wade & Tennant (6) · W. P. Thompson & Co. (3) · None (3) · Haseltine, Lake & Co. (3) · Hyde & Heide (3) · Wheatley & Mackenzie (2) · Mewburn, Ellis & Pryor (2) · George T. Millard (2) · R. J. Urquhart (2) · J. S. Withers & Spooner (2) · Brewer & Son (2) · Boult, Wade, and Tennant (2) · Herbert Haddan & Co. (2) · Abel & Imray (2)
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