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Leroy C. Stewart received US Patent No. 1,863,528 on June 14, 1932, filed August 4, 1930. It was assigned to Dow Chemical Co.
The patent's description opens (from the scanned text):
The invention is understood to comprehend not only the complete cement composition as a wet mix, but also a dry mixture of the essential primary ingredients magnesia, magnesium sulphate and calcium citrate with or without -a filler, and, furthermore, a mixture of ingredients for incorporating in a magnesia cement,,such mixture consisting of magnesium sulphate and a small amount of calcium citrate intimately mixed therewith.
- Author
- Leroy C. Stewart
- Published by
- US Patent Office
- Series
- US Patent No. 1,863,528
- Date
- June 14, 1932
- Library no.
- ACL Doc 22919 · asbestosclaims.law/library/22919
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 2 pages · 270 KB
Where it was listed
- Asbestos, August 1932, in its patents department (the year's issues)
Cite this document
Leroy C. Stewart. “Magnesia Cement Composition (US Patent 1,863,528, 1932).” June 14, 1932. US Patent No. 1,863,528. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22919. https://asbestosclaims.law/library/22919.
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