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Ray E. Spokes and Emil C. Keller received US Patent No. 2,428,299 on September 30, 1947, filed February 27, 1947.
The patent's description opens (from the scanned text):
The present invention is, therefore, `primarily concerned with friction elements embodying as friction-controlling or friction-stabilizing agents therein nely divided dust-like materials or socalled dispersed discrete particles composed essentially of vulcanizable synthetic rubber-like elastoprenes or s o-called synthetic rubbers of the butadiene-acrylonitrile copolymer type, compounded with preferably from about ve percent to about ten percent, by weight, of sulphur, and to which more specific reference will now be made.
- Author
- Ray E. Spokes; Emil C. Keller
- Published by
- US Patent Office
- Series
- US Patent No. 2,428,299
- Date
- September 30, 1947
- Library no.
- ACL Doc 22401 · asbestosclaims.law/library/22401
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 13 pages · 1.7 MB
Where it was listed
- Asbestos, December 1947, in its patents department (the year's issues)
Cite this document
Ray E. Spokes, Emil C. Keller. “Friction Element (US Patent 2,428,299, 1947).” September 30, 1947. US Patent No. 2,428,299. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22401. https://asbestosclaims.law/library/22401.
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