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Roscoe B. Crabbs received US Patent No. 2,328,058 on August 31, 1943, filed December 1, 1938.
The patent's description opens (from the scanned text):
This invention relates to asbestos-cement shingle and siding products and molding plates by whichsaid products are provided witha decorative design impressed in.the weather exposed face of the products.
- Author
- Roscoe B. Crabbs
- Published by
- US Patent Office
- Series
- US Patent No. 2,328,058
- Date
- August 31, 1943
- Library no.
- ACL Doc 22953 · asbestosclaims.law/library/22953
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 5 pages · 442 KB
Where it was listed
- Asbestos, October 1943, in its patents department (the year's issues)
Cite this document
Roscoe B. Crabbs. “Manufacture of Hydraulic Cement Products (US Patent 2,328,058, 1943).” August 31, 1943. US Patent No. 2,328,058. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22953. https://asbestosclaims.law/library/22953.
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