Drilldown: Patents

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Patents > Year granted: 1921 & Granted: Yes & Family year: 1917

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Tech fields:
airplane (12) · None (11) · construction (6) · design (6) · stability (4) · monoplane (4) · longerons (4) · frame (4) · control (4) · wings (4) · aerial propeller (3) · propellers (2) · metal (2) · Aerodynamics (2) · hydroaeroplane (2) · aircraft (2) · wing (2) · automatic stability (2)
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None (3)
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CPCs:
CPC B64C3/00 (8) · CPC B64C2700/6233 (6) · CPC B64C35/00 (3) · CPC B64C1/064 (3) · None (2) · CPC B64C2001/0063 (2) · CPC B64C3/18 (2) · CPC B64C2700/6212 (2) · CPC B64C2001/0081 (2) · CPC B64C17/00 (2) · CPC B64C1/065 (2)
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Showing below up to 44 results in range #1 to #44.

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