Drilldown: Patents

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Patents > Office : AT or ES & Inventors: None & Citations from after 1930: None & Number of claims: None

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airplane (8) · balloon (4) · LTA (4) · frame (3) · propulsion (3) · Subsystem (3) · navigation (2) · pressure (2) · gas (2) · stability (2) · construction (2) · propeller (2) · rudder (2) · airfoil (2) · electricity (2) · propellers (2) · Design (2)
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Showing below up to 22 results in range #1 to #22.

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