Drilldown: Patents

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Patents > Inventor country : FR or GB or RO & Publication date: 1900 - 1909 & National tech categories : DE 77h.5 or FR 6.4 or GB 4 without buoyant & CPCs: CPC B64C39/00

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Airplane (23) · design (15) · Wings (10) · propulsion (9) · propellers (9) · None (9) · Lift (7) · Aerodynamics (7) · Construction (7) · frame (7) · stability (5) · Sustentation (4) · Control (4) · chassis (3) · Steering (3)
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Showing below up to 41 results in range #1 to #41.

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