Drilldown: Patents

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Patents > Year filed: 1905 & First filing: Yes & Number of diagram pages: 2-50000000

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propulsion (8) · navigation (8) · frame (8) · propeller (7) · LTA (7) · None (5) · flapping (5) · stability (5) · airplane (5) · hybrid (4) · wings (4) · helicopter (3) · landing (2) · glider (2) · texture (2) · airfoil (2) · safety (2) · car (2) · marine (2) · parachute (2)
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