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Patents > Applicant person : Alfred John Macy or Antoine-Padoue Filippi or Isaac Bell

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Tech fields:
stability (25) · propellers (19) · airplane (16) · propulsion (16) · Design (10) · subsystem (10) · aerodynamics (8) · control (6) · wheels (5) · frame (5) · lift (5) · marine (5) · Construction (5) · fuselage (4) · navigation (4) · chassis (4) · propeller (4) · airfoil (4) · sustentation (4)
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None (24) · 25941D (4) · 1913781506 (2)
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Showing below up to 70 results in range #1 to #70.

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