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George D. King and Thomas P. Camp received US Patent No. 2,198,776 on April 30, 1940, filed August 29, 1936. It was assigned to United States Gypsum Co.
The patent's description opens (from the scanned text):
The present invention relates to a water-resistant cementitious product, comprising a set mass of interlaced cement crystals and a fusible, water-insoluble coating over the crystals so as to prevent attack thereon by solvent liquids such as water and the like.
- Author
- George D. King; Thomas P. Camp
- Published by
- US Patent Office
- Series
- US Patent No. 2,198,776
- Date
- April 30, 1940
- Library no.
- ACL Doc 23844 · asbestosclaims.law/library/23844
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 3 pages · 307 KB
Where it was listed
- Asbestos, June 1940, in its patents department (the year's issues)
Cite this document
George D. King, Thomas P. Camp. “Water Resistant Cementitious Product (US Patent 2,198,776, 1940).” April 30, 1940. US Patent No. 2,198,776. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23844. https://asbestosclaims.law/library/23844.
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