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Nathan Sulzberger received US Patent No. 1,581,619 on April 20, 1926, filed August 18, 1921.
The patent's description opens (from the scanned text):
This invention relates to improvements in valuable for certain of the purposes for which asbestos is particularly useful, such as high temperature insulation, etc.; while the charred residue produced by heating such asbestos to high temperatures makes the asbestos unsightly and discolored.
- Author
- Nathan Sulzberger
- Published by
- US Patent Office
- Series
- US Patent No. 1,581,619
- Date
- April 20, 1926
- Library no.
- ACL Doc 21776 · asbestosclaims.law/library/21776
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 3 pages · 274 KB
Where it was listed
- Asbestos, June 1926, in its patents department (the year's issues)
Cite this document
Nathan Sulzberger. “Asbestos Paper (US Patent 1,581,619, 1926).” April 20, 1926. US Patent No. 1,581,619. US Patent Office. AsbestosClaims.Law Library, ACL Doc 21776. https://asbestosclaims.law/library/21776.
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