Drilldown: Patents

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Patents > Inventor country : DE or FR & Grant date: April 1913

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None (14) · airplane (6) · design (5) · wings (4) · propulsion (3) · frame (3) · stability (3) · propellers (2) · LTA (2) · construction (2) · subsystem (2) · hydroplane (2) · propeller (2) · landing (2) · steering (2)
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Showing below up to 35 results in range #1 to #35.

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