Drilldown: Patents

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Patents > Office: ES & Publication date: 1900 - 1999 & Number of figures: None

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airplane (15) · LTA (12) · propellers (9) · Design (9) · frame (7) · subsystem (7) · aerodynamics (7) · Construction (7) · hydrodynamics (6) · propulsion (5) · stability (5) · airship (5) · balloon (5) · braking (4) · control (3) · jet (3) · gyroscope (3) · marine (3)
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Showing below up to 51 results in range #1 to #51.

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