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Sidney Speil and Irvin Barnett received US Patent No. 2,811,457 on October 29, 1957, filed December 18, 1952. It was assigned to Johns Manville.
The patent's description opens (from the scanned text):
This invention relates to handlcable, ceramic-bonded heat insulation shapes which have low thermal conductivity comparable to that of free still air, and methods of manufacturing such insulating bodies.
- Author
- Sidney Speil; Irvin Barnett
- Published by
- US Patent Office
- Series
- US Patent No. 2,811,457
- Date
- October 29, 1957
- Library no.
- ACL Doc 22723 · asbestosclaims.law/library/22723
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 4 pages · 523 KB
Where it was listed
- Asbestos, December 1957, in its patents department (the year's issues)
Cited on this site
Cite this document
Sidney Speil, Irvin Barnett. “Inorganic bonded thermal insulating bodies and method of manufacture (US Patent 2,811,457, 1957).” October 29, 1957. US Patent No. 2,811,457. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22723. https://asbestosclaims.law/library/22723.
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