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Ray E. Spokes and John B. Littlefield received US Patent No. 2,901,456 on August 25, 1959, filed March 1, 1955. It was assigned to American Brake Shoe Co.
The patent's description opens (from the scanned text):
This invention relates to a friction element in the form of a composition brake shoe for braking railway equipment.
- Author
- Ray E. Spokes; John B. Littlefield
- Published by
- US Patent Office
- Series
- US Patent No. 2,901,456
- Date
- August 25, 1959
- Library no.
- ACL Doc 22464 · asbestosclaims.law/library/22464
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 4 pages · 675 KB
Where it was listed
- Asbestos, November 1959, in its patents department (the year's issues)
Cite this document
Ray E. Spokes, John B. Littlefield. “Friction elements (US Patent 2,901,456, 1959).” August 25, 1959. US Patent No. 2,901,456. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22464. https://asbestosclaims.law/library/22464.
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