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David Wallace Akerson received US Patent No. 4,024,014 on May 17, 1977, filed December 15, 1975. It was assigned to Conwed Corp.
The patent's abstract:
A process for preparing a non-combustible hardboard sheet is disclosed. The process comprises the formation of relatively low density insulation board type product which is dried, whereafter the board is wetted on both sides and compressed at relatively high temperatures to form a dense non-combustible hardboard product.
- Author
- David Wallace Akerson
- Published by
- US Patent and Trademark Office
- Series
- US Patent No. 4,024,014
- Date
- May 17, 1977
- Library no.
- ACL Doc 23232 · asbestosclaims.law/library/23232
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 6 pages · 431 KB
Where it was listed
- Asbestos, July 1977, in its patents department (the year's issues)
Cite this document
David Wallace Akerson. “Non-combustible hardboard sheet (US Patent 4,024,014, 1977).” May 17, 1977. US Patent No. 4,024,014. US Patent and Trademark Office. AsbestosClaims.Law Library, ACL Doc 23232. https://asbestosclaims.law/library/23232.
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