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Walter L. Pennie received US Patent No. 3,607,515 on September 21, 1971, filed July 18, 1967.
The patent's abstract:
An improved corrosion and stress resistant coating-wrap system for pipelines is made by coating the contacting surface of asbestos felt with a thin coating layer of either coal tar compounds having softening points in the range of about 120* F.250* F. or natural and synthetic rubber-based coating compounds. Subsequent application of this coated felt to the hot enamel coating on a pipeline results in a void free felt-enamel interface.
- Author
- Walter L. Pennie
- Published by
- US Patent Office
- Series
- US Patent No. 3,607,515
- Date
- September 21, 1971
- Library no.
- ACL Doc 21811 · asbestosclaims.law/library/21811
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 5 pages · 372 KB
Where it was listed
- Asbestos, January 1972, in its patents department (the year's issues)
Cite this document
Walter L. Pennie. “Asbestos pipeline felt (US Patent 3,607,515, 1971).” September 21, 1971. US Patent No. 3,607,515. US Patent Office. AsbestosClaims.Law Library, ACL Doc 21811. https://asbestosclaims.law/library/21811.
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