Drilldown: Patents

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Patents > Grant date: 1912 & Patent agent: None & Number of claims: 6-50000000

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airplane (10) · Stability (8) · None (7) · design (6) · frame (5) · construction (4) · whole (4) · subsystem (4) · Propulsion (4) · Propellers (3) · navigation (3) · control (3) · wings (3) · airship (3)
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