Drilldown: Patents

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Patents > Filing date: 1900 - 1909 & Related to aircraft : -1 or 0.5 or 1? or DE 369478 or flapping or marine

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marine (9) · Propulsion (9) · military (9) · projectile (8) · propeller (5) · LTA (5) · design (4) · stability (4) · hydroplane (4) · rudder (3) · steering (3) · electricity (3) · frame (3)
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