Drilldown: Patents

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Patents > Grant date: 1900 - 1909 & First filing: Yes & Number of claims: 12-15

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propulsion (11) · navigation (9) · LTA (9) · frame (7) · stability (6) · marine (6) · rudder (4) · propeller (4) · flapping (4) · None (3) · parachute (3) · helicopter (3) · whole (3)
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None (7) · USPC 244/20 (3) · USPC 244/6 (2) · USPC 244/25 (2)
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