Drilldown: Patents

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Patents > Office: DE & Inventor country : AH or AT or Brazil

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Tech fields:
LTA (8) · propulsion (6) · balloon (5) · engine (4) · propeller (4) · None (3) · airplane (3) · subsystem (3) · control (3) · Tragfläche (2) · propellers (2) · military (2) · marine (2) · aerodynamics (2) · ICE (2) · frame (2) · wings (2) · dirigible (2)
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Citations from after 1930:
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Showing below up to 36 results in range #1 to #36.

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