Drilldown: Patents

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Patents > Year filed: 1898 & Number of text pages: 1-2

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propulsion (8) · LTA (7) · frame (5) · dirigible (3) · kite (3) · car (3) · Paddle-wheel (2) · hybrid (2) · parachute (2) · propeller (2) · marine (2) · navigation (2) · Windmill (2) · subsystem (2)
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