CPC Y10T74/20201
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CPC Y10T74/20201 is a patent class for xyz.[1][2]
References
This wiki has 3 patents in category "CPC Y10T74/20201".
Patents in category CPC Y10T74/20201
- Patent US-1910-970974 (English title: Flying-machine, Inventors: Peter Robert Torbrand, Filing date: 1910-02-25)
- Patent US-1911-1177656 (English title: Aeroplane, Inventors: John Sharp • William Sharp, Filing date: 1911-06-30)
- Patent US-1913-1065216 (English title: Regulating device, Inventors: Julius Christian Christiansen, Filing date: 1913-06-17)
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