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Patents > Applicant firm: None & National tech categories: None & CPCs : CPC B64C2700/6212 or CPC B64C35/00 or CPC B64C39/00

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Tech fields:
None (386) · airplane (42) · stability (37) · design (25) · frame (19) · construction (16) · wings (14) · automatic stability (12) · Control (11) · hydroplane (11) · whole (10) · propulsion (10) · hydroaeroplane (10) · lift (8) · pendulum (8) · propellers (8) · hybrid (8) · fuselage (7) · marine (7) · balance (7)
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None (459) · Patent US-1913-1094989 (2) · Patent FR-1916-502839 (2)
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None (380) · Marks & Clerk (12) · Boult, Wade & Tennant (11) · Herbert Haddan & Co. (7) · Brewer & Son (7) · Abel & Imray (7) · Haseltine, Lake & Co. (6) · Hyde & Heide (5) · W. P. Thompson & Co. (4) · None (3) · Boult, Wade, and Tennant (3) · Edward Evans & Co. (3) · Lewis William Goold (3) · J. S. Withers & Spooner (3) · ELT & Co. (3)
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