Drilldown: Patents

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Patents > Office : AT or GB or US & Filing date: 1800 - 1899 & Publication date: 1800 - 1899

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propeller (5) · navigation (5) · LTA (4) · propulsion (4) · frame (4) · rudder (3) · balloon (3) · airplane (2) · projectile (2) · flapping (2) · military (2) · whole (2)
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Showing below up to 19 results in range #1 to #19.

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