CPC Y02T70/121
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CPC Y02T70/121 is a patent class for xyz.[1][2]
References
This wiki has 4 patents in category "CPC Y02T70/121".
Patents in category CPC Y02T70/121
- Patent US-1905-831173 (English title: Aeroplane, Inventors: John J. Montgomery, Filing date: 1905-04-26)
- Patent US-1912-1065506 (English title: Means for reducing the resistance to the passage of vehicles in fluids, Inventors: Louis Constantin, Filing date: 1912-03-18)
- Patent US-1912-1119178 (English title: Propeller and driving means therefor, Inventors: Carl A. Krantz, Filing date: 1912-07-15)
- Patent US-1914-1104254 (English title: Strut-cover of stream-line surface, Inventors: Gustav R. Eddelbuttel-Reimers, Filing date: 1913-12-08)
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