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Harold P. Hayden received US Patent No. 2,047,778 on July 14, 1936, filed August 14, 1931. It was assigned to Barber Asphalt CO.
The patent's description opens (from the scanned text):
This invention relates to insulated pipe and while it is adaptable for various uses, it will be found more especially advantageous for use in the formation of steam lines and in particular Where such lines extend out of doors, as from one building to another.
- Author
- Harold P. Hayden
- Published by
- US Patent Office
- Series
- US Patent No. 2,047,778
- Date
- July 14, 1936
- Library no.
- ACL Doc 22731 · asbestosclaims.law/library/22731
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 3 pages · 255 KB
Where it was listed
- Asbestos, September 1936, in its patents department (the year's issues)
Cite this document
Harold P. Hayden. “Insulated Pipe (US Patent 2,047,778, 1936).” July 14, 1936. US Patent No. 2,047,778. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22731. https://asbestosclaims.law/library/22731.
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