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Emil J. Poltorak received US Patent No. 2,459,721 on January 18, 1949, filed January 26, 1946. It was assigned to Johns Manville.
The patent's description opens (from the scanned text):
This invention relates to heat and chemical resistant gaskets, and is particularly concerned with a method of manufacturing heat, chemical and solvent resistant gaskets.
- Author
- Emil J. Poltorak
- Published by
- US Patent Office
- Series
- US Patent No. 2,459,721
- Date
- January 18, 1949
- Library no.
- ACL Doc 22974 · asbestosclaims.law/library/22974
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 3 pages · 291 KB
Where it was listed
- Asbestos, April 1949, in its patents department (the year's issues)
Cited on this site
Cite this document
Emil J. Poltorak. “Manufacturing Gaskets (US Patent 2,459,721, 1949).” January 18, 1949. US Patent No. 2,459,721. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22974. https://asbestosclaims.law/library/22974.
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