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William R. Seigle received US Patent No. 1,982,542 on November 27, 1934, filed March 5, 1932. It was assigned to Johns Manville.
The patent's description opens (from the scanned text):
This invention relates to a treated fibrous material and process of making the same, and particularly to a product suitable for use as a thermal insulator.
- Author
- William R. Seigle
- Published by
- US Patent Office
- Series
- US Patent No. 1,982,542
- Date
- November 27, 1934
- Library no.
- ACL Doc 23785 · asbestosclaims.law/library/23785
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 4 pages · 482 KB
Where it was listed
- Asbestos, January 1935, in its patents department (the year's issues)
Cite this document
William R. Seigle. “Treated Fibrous Material (US Patent 1,982,542, 1934).” November 27, 1934. US Patent No. 1,982,542. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23785. https://asbestosclaims.law/library/23785.
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