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Ray E. Spokes and Emil C. Keller received US Patent No. 2,428,298 on September 30, 1947, filed November 16, 1942.
The patent's description opens (from the scanned text):
This invention relates tol friction elements and to making the same and more particularly, the c' present invention relates to friction elements of the type which are employedin the brakes of automotive vehicles, including trucks, buses, and s claims'. (o1. zoo-5) 'of such organicbonding and other agents and enhanced-by carbonization of such organic bond` 7 .ing'agentsand other materials or by both of or mineral friction-controlling or imparting agents, together with other materials which may be employed for imparting specific properties or characteristics to such friction elements, such, for example, as ...
- Author
- Ray E. Spokes; Emil C. Keller
- Published by
- US Patent Office
- Series
- US Patent No. 2,428,298
- Date
- September 30, 1947
- Library no.
- ACL Doc 22400 · asbestosclaims.law/library/22400
- 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 2,428,298, 1947).” September 30, 1947. US Patent No. 2,428,298. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22400. https://asbestosclaims.law/library/22400.
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