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Richard V. Mattison received US Patent No. 1,687,681 on October 16, 1928, filed October 1, 1924. It was assigned to Asbestos Shingle Slate & Sheat.
The patent's description opens (from the scanned text):
This invention relates to cement products] and methods of producing them, particular reference being had to cement products formed of cement .and fibrous material such as asbestos set in the cement. a One method of producing cement material of this kind is to build it up of a plurality of layers or films colloided by water, the assembled layers' being pressed together and allowed to set.
- Author
- Richard V. Mattison
- Published by
- US Patent Office
- Series
- US Patent No. 1,687,681
- Date
- October 16, 1928
- Library no.
- ACL Doc 22009 · asbestosclaims.law/library/22009
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 3 pages · 202 KB
Where it was listed
- Asbestos, December 1928, in its patents department (the year's issues)
Cite this document
Richard V. Mattison. “Cement Product (US Patent 1,687,681, 1928).” October 16, 1928. US Patent No. 1,687,681. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22009. https://asbestosclaims.law/library/22009.
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