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Patents > Year filed: 1911 & Supplementary to patent : Patent US-1913-04-21 George Raymond Lawrence or None & National tech categories : AT 77d or FR 6.4 or USPC 244/119 & CPCs : CPC B64C13/00 or CPC B64C2700/6218 or CPC B64C3/00 or CPC B64C35/00

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airplane (22) · stability (19) · automatic stability (9) · construction (9) · design (9) · Wings (8) · frame (7) · None (5) · Subsystem (4) · landing (4) · chassis (4) · fuselage (4) · control (4) · wheels (3) · aerodynamics (3) · lift (3) · metal (3)
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