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Ernest F. Nanfeldt received US Patent No. 1,632,620 on June 14, 1927, filed January 20, 1920.
The patent's description opens (from the scanned text):
This invention relates to processes of washing or cleaning asbestos to prepare it for subsequent uses or operations, especially those of carding and spinning to produce asbestos yarn.
- Author
- Ernest F. Nanfeldt
- Published by
- US Patent Office
- Series
- US Patent No. 1,632,620
- Date
- June 14, 1927
- Library no.
- ACL Doc 23455 · asbestosclaims.law/library/23455
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 4 pages · 323 KB
Where it was listed
- Asbestos, September 1927, in its patents department (the year's issues)
Cite this document
Ernest F. Nanfeldt. “Process of Cleaning Asbestos (US Patent 1,632,620, 1927).” June 14, 1927. US Patent No. 1,632,620. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23455. https://asbestosclaims.law/library/23455.
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