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John H. Matthews received US Patent No. 2,201,191 on May 21, 1940, filed February 24, 1939. It was assigned to Raybestos Manhattan Inc.
The patent's description opens (from the scanned text):
This invention relates to friction materials, such as brake blocks, clutch facings, brake linings, and-the like frictional engaging surfaces, and has for its particular object the production 6 of molded, non-woven friction elements provided with abrasive operating surfaces adapted for limited abrasive action on the brake drums or' other metallic cooperating surfaces. .
- Author
- John H. Matthews
- Published by
- US Patent Office
- Series
- US Patent No. 2,201,191
- Date
- May 21, 1940
- Library no.
- ACL Doc 22442 · asbestosclaims.law/library/22442
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 3 pages · 339 KB
Where it was listed
- Asbestos, August 1940, in its patents department (the year's issues)
Cite this document
John H. Matthews. “Friction Material (US Patent 2,201,191, 1940).” May 21, 1940. US Patent No. 2,201,191. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22442. https://asbestosclaims.law/library/22442.
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