Drilldown: Patents

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Patents > Office : ?? or DE & Inventor country : AT or Brazil or CH

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Tech fields:
LTA (9) · propulsion (8) · airplane (7) · None (6) · control (6) · balloon (5) · engine (4) · propeller (4) · aerodynamics (3) · subsystem (3) · airfoil (3)
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Citations from after 1930:
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Showing below up to 47 results in range #1 to #47.

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