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Rene Dorn and Martin Willis received US Patent No. 2,004,935 on June 18, 1935, filed April 28, 1932.
The patent's description opens (from the scanned text):
This invention pertains generally to the class of cementitious materials and particularly to the class of cementitious materials which are adapted to be formed for structural purposes.
- Author
- Rene Dorn; Martin Willis
- Published by
- US Patent Office
- Series
- US Patent No. 2,004,935
- Date
- June 18, 1935
- Library no.
- ACL Doc 22017 · asbestosclaims.law/library/22017
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 7 pages · 694 KB
Where it was listed
- Asbestos, August 1935, in its patents department (the year's issues)
Cite this document
Rene Dorn, Martin Willis. “Cementitious Sheet (US Patent 2,004,935, 1935).” June 18, 1935. US Patent No. 2,004,935. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22017. https://asbestosclaims.law/library/22017.
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