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Ernst Schurmann and Wilhelm Esch received US Patent No. 2,046,971 on July 7, 1936, filed May 9, 1935.
The patent's description opens (from the scanned text):
Our invention relates to a process for the puriflcation of asbestos.
- Author
- Ernst Schurmann; Wilhelm Esch
- Published by
- US Patent Office
- Series
- US Patent No. 2,046,971
- Date
- July 7, 1936
- Library no.
- ACL Doc 23449 · asbestosclaims.law/library/23449
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 1 pages · 126 KB
Where it was listed
- Asbestos, September 1936, in its patents department (the year's issues)
Cite this document
Ernst Schurmann, Wilhelm Esch. “Process for the Purification of Asbestos (US Patent 2,046,971, 1936).” July 7, 1936. US Patent No. 2,046,971. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23449. https://asbestosclaims.law/library/23449.
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