CPC Y10T74/1289
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CPC Y10T74/1289 is a patent class for xyz.[1][2]
References
This wiki has 1 patents in category "CPC Y10T74/1289".
Patents in category CPC Y10T74/1289
- Patent US-1911-1279471 (English title: Gyroscopic Compass, Inventors: Elmer Ambrose Sperry, Filing date: 1911-06-21, Applicant firm: Sperry Gyroscope Company)
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