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Herbert Abraham received US Patent No. 2,514,021 on July 4, 1950, filed March 13, 1948. It was assigned to Ruberoid Co.
The patent's description opens (from the scanned text):
This invention relates to improvements in a composition board, and more particularly to a libro-cement board containing organic matter.
- Author
- Herbert Abraham
- Published by
- US Patent Office
- Series
- US Patent No. 2,514,021
- Date
- July 4, 1950
- Library no.
- ACL Doc 22114 · asbestosclaims.law/library/22114
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 3 pages · 227 KB
Where it was listed
- Asbestos, August 1950, in its patents department (the year's issues)
Cite this document
Herbert Abraham. “Composition board (US Patent 2,514,021, 1950).” July 4, 1950. US Patent No. 2,514,021. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22114. https://asbestosclaims.law/library/22114.
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