Drilldown: Patents

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Patents > Family year: 1897 & Number of claims: 3-40

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frame (9) · navigation (6) · propeller (4) · rudder (4) · LTA (4) · Design (3) · stability (3) · propulsion (3) · car (3) · kite (3) · flapping (3) · Construction (3) · None (2) · sail (2) · glider (2) · wings (2) · airfoil (2)
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