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Bertil John Martin Schmidt received US Patent No. 2,794,752 on June 4, 1957, filed November 19, 1953. It was assigned to Internationella Siporex AB.
The patent's description opens (from the scanned text):
This invention concerns the manufacture of molded porous light-weight Concrete or cellular concrete and the invention has for its object the provision of a considerable increase of the strength properties, more particularly the tensile strength, of such concrete bodies, for example blocks and slabs.
- Author
- Bertil John Martin Schmidt
- Published by
- US Patent Office
- Series
- US Patent No. 2,794,752
- Date
- June 4, 1957
- Library no.
- ACL Doc 22716 · asbestosclaims.law/library/22716
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 3 pages · 286 KB
Where it was listed
- Asbestos, July 1957, in its patents department (the year's issues)
Cite this document
Bertil John Martin Schmidt. “Impregnation of light-weight concrete with silicate and thermoplastic resins (US Patent 2,794,752, 1957).” June 4, 1957. US Patent No. 2,794,752. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22716. https://asbestosclaims.law/library/22716.
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