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Patents > Grant date: March 1913 & Number of text pages: 2-9

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None (3)
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None (16) · airplane (13) · propellers (5) · frame (5) · design (5) · construction (4) · subsystem (4) · stability (4) · navigation (4) · LTA (4) · landing (4) · wings (3) · lift (3) · takeoff (3) · airfoil (3) · safety (3) · rudder (3) · propulsion (3) · marine (3)
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None (10)
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None (10) · CPC B64C17/00 (5) · CPC B64C9/00 (3) · CPC B64C3/26 (2) · CPC B64C2700/6218 (2) · CPC B64C33/02 (2) · CPC B64C2700/6295 (2) · CPC B64C39/00 (2) · CPC B64C13/00 (2) · CPC B64C3/00 (2)
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