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Patents > Inventor country : DE or HU or NL & CPCs: CPC B64C23/005

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airplane (16) · None (14) · stability (10) · propeller (9) · frame (6) · hybrid (6) · whole (5) · takeoff (5) · propulsion (5) · gyroscope (4) · propellers (4) · design (4) · helicopter (4) · navigation (3) · construction (3) · jet (3)
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Showing below up to 42 results in range #1 to #42.

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