Drilldown: Patents

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Patents > Grant date: 1920 - 1929 & Number of claims: 7-8

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Tech fields:
airplane (13) · None (10) · construction (7) · propellers (5) · design (5) · Propeller (4) · frame (4) · wings (4) · biplane (4) · motors (3) · fuselage (3) · airfoil (2) · safety (2) · propulsion (2) · landing (2) · instrument (2) · hydroaeroplane (2) · control (2)
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CPCs:
None (6) · CPC B64C35/00 (5) · CPC B64C3/00 (3) · CPC B64C2700/6233 (2) · CPC B64C11/04 (2) · CPC B64D27/00 (2)
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Showing below up to 42 results in range #1 to #42.

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