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Patents > Year filed: 1909 & IPCs : IPC B64B1/40 or IPC B64C11/00

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LTA (9) · propellers (8) · propulsion (7) · Airship (6) · Airplane (6) · wings (5) · None (4) · aerial propeller (3) · Subsystem (3) · aerostat (3) · Design (3) · ascension (2) · texture (2) · stability (2) · propeller (2) · navigation (2) · Flapping (2) · control (2) · construction (2) · Lift (2)
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Showing below up to 37 results in range #1 to #37.

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