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Patents > Grant date: 1921 & Granted: Yes & Number of figures: 4-6

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Year granted:
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Inventors:
None (5) · Pierre-Jean-René Postel-Vinay (2) · Maurice-Achille Lécuyer (2) · Clarence Ernest Holt (2) · Pierre Levasseur (2)
Inventor country:
Applicant person:
None (5) · Clarence Ernest Holt (2) · Maurice-Achille Lécuyer (2) · Pierre-Jean-René Postel-Vinay (2) · Pierre Levasseur (2)
Applicant is inventor:
Tech fields:
airplane (9) · None (7) · construction (7) · propellers (5) · propeller (5) · Fuselage (4) · frame (4) · marine (3) · control (3) · design (3)
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Related to aircraft:
CPCs:
CPC B64C23/005 (5) · CPC B64C3/00 (5) · CPC B64C35/00 (3) · CPC B64C2700/6274 (3) · CPC B64C2700/6233 (3) · CPC B64C11/36 (3) · CPC B64C11/22 (2) · CPC B64C2700/6235 (2) · CPC B64C2001/0063 (2) · None (2) · CPC B64C1/12 (2)
First filing:
Citations from after 1930:
Number of text pages:
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