Drilldown: Patents

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Patents > National tech categories : USPC 267/64.26 or None & CPCs : CPC B64C11/006 or CPC B64C25/60 or CPC B64C35/00 & Number of claims: 3-4 & Number of figures: 1-5

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propulsion (7) · None (6) · airplane (4) · Propeller (4) · hydroaeroplane (4) · paddle-wheel (3) · feathering (2) · takeoff (2) · subsystem (2) · propellers (2) · launching (2) · frame (2) · float (2) · hydroplane (2)
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Showing below up to 32 results in range #1 to #32.

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