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Patents > Patent agent : J. Germain or Richardson & Number of text pages: 2-3

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Tech fields:
airplane (20) · stability (14) · frame (13) · control (10) · Design (10) · propellers (9) · Construction (9) · propulsion (8) · automatic stability (7) · aerodynamics (6) · Helicopter (5) · safety (4) · hybrid (4) · Wheels (3) · rudder (3) · lift (3) · equilibrium (3) · wings (3) · airfoil (3) · None (3)
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None (6) · 494571D (2) · 510212D (2) · 496388D (2)
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CPC B64C2700/6295 (5) · CPC B64C17/00 (5) · CPC B64C39/00 (5) · CPC B64C2700/6281 (3) · CPC B64C2700/6274 (3) · CPC B64C3/18 (3) · CPC B64C2700/6216 (3) · CPC B64C2700/6212 (3) · CPC B64C27/12 (3) · CPC B64C17/06 (3) · CPC B64C23/005 (3) · CPC B64C3/00 (3)
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