Drilldown: Patents

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Patents > Filing date: April 1912 & Related to aircraft: Yes & Number of diagram pages: 1-2

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airplane (10) · design (8) · frame (5) · stability (5) · propellers (4) · automatic stability (4) · cables (3) · construction (3) · dirigible (2) · longerons (2) · lift (2) · fabric (2) · wings (2) · airship (2) · sustentation (2)
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