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Ray E. Spokes received US Patent No. 1,961,177 on June 5, 1934, filed June 13, 1932. It was assigned to American Brakeblok Corp.
- Author
- Ray E. Spokes
- Published by
- US Patent Office
- Series
- US Patent No. 1,961,177
- Date
- June 5, 1934
- Library no.
- ACL Doc 22257 · asbestosclaims.law/library/22257
- Rights
- US government work, in the public domain.
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Where it was listed
- Asbestos, August 1934, in its patents department (the year's issues)
Cite this document
Ray E. Spokes. “Facing Friction Elements (US Patent 1,961,177, 1934).” June 5, 1934. US Patent No. 1,961,177. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22257. https://asbestosclaims.law/library/22257.
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