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William Nanfeldt received US Patent No. 2,175,480 on October 10, 1939, filed July 2, 1936. It was assigned to World Bestos Corp.
- Author
- William Nanfeldt
- Published by
- US Patent Office
- Series
- US Patent No. 2,175,480
- Date
- October 10, 1939
- Library no.
- ACL Doc 23203 · asbestosclaims.law/library/23203
- Rights
- US government work, in the public domain.
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Where it was listed
- Asbestos, December 1939, in its patents department (the year's issues)
Cite this document
William Nanfeldt. “Molded Friction Material (US Patent 2,175,480, 1939).” October 10, 1939. US Patent No. 2,175,480. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23203. https://asbestosclaims.law/library/23203.
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