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Robert H. Walker received US Patent No. 1,974,905 on September 25, 1934, filed July 30, 1932. It was assigned to Raybestos Manhattan Inc.
The patent's description opens (from the scanned text):
This invention relates to new and useful improvements in brake drums, and has for an object to provide a brake drum including means to prevent or greatly reduce the tendency to score the brake drum, particularly on the substantially complete application of the brakes of a vehicle when the vehicle is traveling at high speed.
- Author
- Robert H. Walker
- Published by
- US Patent Office
- Series
- US Patent No. 1,974,905
- Date
- September 25, 1934
- Library no.
- ACL Doc 21883 · asbestosclaims.law/library/21883
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 4 pages · 418 KB
Where it was listed
- Asbestos, November 1934, in its patents department (the year's issues)
Cite this document
Robert H. Walker. “Brake Drum (US Patent 1,974,905, 1934).” September 25, 1934. US Patent No. 1,974,905. US Patent Office. AsbestosClaims.Law Library, ACL Doc 21883. https://asbestosclaims.law/library/21883.
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