Drilldown: Patents

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Patents > Year granted: 1920 - 1929 & Cites these patents: None & Number of claims: 12-15

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HTA (4) · airplane (4) · design (4) · None (3) · construction (3) · aerodynamics (3) · stability (3) · frame (3) · propeller (2) · flying machine (2) · wings (2)
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CPC B64C17/00 (3) · None (2) · CPC B64C2001/0081 (2)
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