Drilldown: Patents

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Patents > Office : ?? or FR & Patent agent: None & IPCs : IPC B64C3/00 or IPC B64C39/00 & Number of claims: 1-3

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airplane (11) · propulsion (7) · None (6) · propellers (5) · Frame (4) · Fuselage (4) · construction (4) · rudder (3) · Design (3) · Aerodynamics (2) · Ascension (2) · sustentation (2) · Coleopter (2) · speed (2) · stability (2) · stays (2)
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