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Patents > Office: US & Family year: 1906 & Number of figures: 3-20

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Inventors:
Anthony O'Brate (3) · Ruter William Springer (2)
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Anthony O'Brate (3) · Ruter William Springer (2)
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Tech fields:
navigation (17) · LTA (13) · flapping (13) · airplane (12) · propeller (12) · propulsion (11) · frame (10) · stability (9) · airfoil (6) · rudder (6) · ornithopter (5) · hybrid (5) · helicopter (4) · human-powered (4) · takeoff (3) · landing (3) · wings (3) · airship (3) · car (3)
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USPC 244/22 (7) · None (5) · USPC 244/6 (3) · USPC 244/35R (3) · USPC 244/64 (3) · USPC 244/9 (2) · USPC 244/70 (2) · USPC 244/30 (2) · USPC 244/27 (2) · USPC 244/25 (2) · USPC 244/63 (2) · USPC 416/116 (2)
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