CPC B64C2230/20
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CPC B64C2230/20 is a patent class for xyz.[1][2]
References
This wiki has 5 patents in category "CPC B64C2230/20".
Patents in category CPC B64C2230/20
- Patent US-1910-1124917 (English title: Aeroplane construction, Inventors: Marius C. Krarup, Filing date: 1910-06-16)
- Patent FR-1913-456012 (Inventors: Roger GUILLEMAIN, Filing date: 1912-06-08)
- Patent FR-1913-455178 (Inventors: ADAM HENRI-JEAN, Filing date: 1913-03-06)
- Patent FR-1914-474641 (English title: Type of glider wing, Inventors: François-Philippe-Armand Rousseau, Filing date: 1914-06-29)
- Patent FR-1921-527415 (Inventors: Jules CESARIO, Filing date: 1918-04-04)
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