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John W. Plauka and Robert E. Parry received US Patent No. 2,766,140 on October 9, 1956, filed September 28, 1953. It was assigned to Johns Manville.
The patent's description opens (from the scanned text):
This invention relates to an inorganic coating composition, and more particularly relates to an inorganic, incombustible surface-hardening coating treatment for fiberreinforced panels having a calcareous matrix.
- Author
- John W. Plauka; Robert E. Parry
- Published by
- US Patent Office
- Series
- US Patent No. 2,766,140
- Date
- October 9, 1956
- Library no.
- ACL Doc 21987 · asbestosclaims.law/library/21987
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 3 pages · 486 KB
Where it was listed
- Asbestos, November 1956, in its patents department (the year's issues)
Cite this document
John W. Plauka, Robert E. Parry. “Calcareous matrix body coated with reaction product of an alkali metal boro-phosphate and a metal silicofluoride (US Patent 2,766,140, 1956).” October 9, 1956. US Patent No. 2,766,140. US Patent Office. AsbestosClaims.Law Library, ACL Doc 21987. https://asbestosclaims.law/library/21987.
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