Drilldown: Patents

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Patents > Grant date: 1920 & First filing: Yes & Number of text pages: 4-5

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None (10) · Airplane (8) · stability (3) · construction (3) · frame (2) · propulsion (2) · propellers (2) · navigation (2) · metal (2) · marine (2) · landing (2) · hybrid (2) · fuselage (2) · wings (2) · chassis (2) · design (2) · aerodynamics (2) · control (2)
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