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Clemens Hannen received US Patent No. 2,215,150 on September 17, 1940, filed December 16, 1937.
- Author
- Clemens Hannen
- Published by
- US Patent Office
- Series
- US Patent No. 2,215,150
- Date
- September 17, 1940
- Library no.
- ACL Doc 23424 · asbestosclaims.law/library/23424
- Rights
- US government work, in the public domain.
Read or download
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Where it was listed
- Asbestos, November 1940, in its patents department (the year's issues)
Cite this document
Clemens Hannen. “Process for Treating Mineral Fibrous Substances (US Patent 2,215,150, 1940).” September 17, 1940. US Patent No. 2,215,150. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23424. https://asbestosclaims.law/library/23424.
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