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Werner Wilke and Hans Fetzer received US Patent No. 3,452,532 on July 1, 1969, filed July 20, 1967. It was assigned to Rex Asbestwerke Graf Von Rex KG.
The patent's description opens:
Our invention relates to methods of producing purified asbestos yarn and other asbestos structures and heating such structures to relatively high temperatures for removing non-asbestos substances.
- Author
- Werner Wilke; Hans Fetzer
- Published by
- US Patent Office
- Series
- US Patent No. 3,452,532
- Date
- July 1, 1969
- Library no.
- ACL Doc 22971 · asbestosclaims.law/library/22971
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 3 pages · 392 KB
Where it was listed
- Asbestos, August 1969, in its patents department (the year's issues)
Cite this document
Werner Wilke, Hans Fetzer. “Manufacture of purified asbestos products (US Patent 3,452,532, 1969).” July 1, 1969. US Patent No. 3,452,532. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22971. https://asbestosclaims.law/library/22971.
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