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Patents > Office: US & Family year: 1912 & Number of diagram pages: 2

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Inventors:
William D. French (2)
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Applicant person:
William D. French (2) · Frank Harding (2)
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Tech fields:
airplane (13) · stability (8) · safety (6) · propulsion (5) · frame (5) · parachute (5) · propeller (5) · navigation (4) · None (4) · rudder (3) · airship (3) · whole (3) · marine (3)
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None (6) · USPC 244/80 (4) · USPC 244/45R (3) · USPC 244/22 (2) · USPC 244/87 (2) · USPC 244/104R (2) · USPC 244/105 (2) · USPC 244/139 (2) · USPC 244/147 (2) · USPC 244/233 (2) · USPC 416/129 (2) · USPC 244/225 (2)
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