Drilldown: Patents

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Patents > Year granted: 1917 & Family year: 1917 & Number of claims: 4-90

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airplane (5) · None (4) · construction (4) · aerial propeller (3) · stability (3) · frame (3) · electricity (2) · propulsion (2) · fuselage (2) · wings (2) · control (2) · Airship (2)
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