Drilldown: Patents

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Patents > Grant date: 1898 & Assigned to: None & Number of claims: 0-20

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LTA (13) · navigation (10) · propulsion (10) · frame (10) · balloon (6) · flapping (5) · wings (5) · kite (4) · None (3) · stability (3) · propeller (3) · hybrid (3)
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Showing below up to 38 results in range #1 to #38.

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