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John J. Grabfield and Jr Frederick A. Kinch received US Patent No. 1,607,671 on November 23, 1926, filed August 6, 1923.
- Author
- John J. Grabfield; Jr Frederick A. Kinch
- Published by
- US Patent Office
- Series
- US Patent No. 1,607,671
- Date
- November 23, 1926
- Library no.
- ACL Doc 21842 · asbestosclaims.law/library/21842
- Rights
- US government work, in the public domain.
Read or download
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Where it was listed
- Asbestos, January 1927, in its patents department (the year's issues)
Cite this document
John J. Grabfield, Jr Frederick A. Kinch. “Automobile Brake Tester for Measuring the Efficiency of Brakes (US Patent 1,607,671, 1926).” November 23, 1926. US Patent No. 1,607,671. US Patent Office. AsbestosClaims.Law Library, ACL Doc 21842. https://asbestosclaims.law/library/21842.
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