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Frederick A. Mett received US Patent No. 1,741,869 on December 31, 1929, filed August 23, 1923.
The patent's description opens (from the scanned text):
This invention relates to a process for refining asbestos ore and has special reference to the separation of the gangue from the asbestos fibres without subjecting said fibres to physical injury and destruction. fThis invention has special application to the treatment of ore containing amphibole asbestos fibres, which are shorter and structurally weaker than the longer chrysotile asbestos fibres, by a process and apparatus that preserve the structure and strength of the fibres to a very high degree and reduce the break age and crumbling of the fibres to a ...
- Author
- Frederick A. Mett
- Published by
- US Patent Office
- Series
- US Patent No. 1,741,869
- Date
- December 31, 1929
- Library no.
- ACL Doc 23474 · asbestosclaims.law/library/23474
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 5 pages · 419 KB
Where it was listed
- Asbestos, February 1930, in its patents department (the year's issues)
Cited on this site
Cite this document
Frederick A. Mett. “Process of Refining Asbestos Ore (US Patent 1,741,869, 1929).” December 31, 1929. US Patent No. 1,741,869. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23474. https://asbestosclaims.law/library/23474.
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