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Harvey D. Geyer received US Patent No. 2,221,400 on November 12, 1940, filed February 1, 1940. It was assigned to General Motors Corp.
The patent's description opens (from the scanned text):
This invention relates 'to friction material and to a process for its manufacture.
- Author
- Harvey D. Geyer
- Published by
- US Patent Office
- Series
- US Patent No. 2,221,400
- Date
- November 12, 1940
- Library no.
- ACL Doc 22372 · asbestosclaims.law/library/22372
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 3 pages · 331 KB
Where it was listed
- Asbestos, January 1941, in its patents department (the year's issues)
Cite this document
Harvey D. Geyer. “Friction Clutch Facing (US Patent 2,221,400, 1940).” November 12, 1940. US Patent No. 2,221,400. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22372. https://asbestosclaims.law/library/22372.
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