Drilldown: Patents

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Patents > Filing date: 1912 & Grant date: September 1912 & Related to aircraft: 1

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airplane (10) · design (5) · propellers (4) · None (3) · stability (3) · propulsion (3) · landing (3) · chassis (2) · piloting (2) · frame (2) · construction (2) · wings (2)
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