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Clayton V. French and Elmer R. Ihne received US Patent No. 2,859,484 on November 11, 1958, filed May 25, 1954. It was assigned to Johns Manville.
The patent's description opens (from the scanned text):
This invention relates to a method of manufacturing fiber-cement sheets, and more particularly to a method of manufacturing sheets containing asbestos fiber and cement for use as structural building materials.
- Author
- Clayton V. French; Elmer R. Ihne
- Published by
- US Patent Office
- Series
- US Patent No. 2,859,484
- Date
- November 11, 1958
- Library no.
- ACL Doc 23139 · asbestosclaims.law/library/23139
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 5 pages · 676 KB
Where it was listed
- Asbestos, December 1958, in its patents department (the year's issues)
Cite this document
Clayton V. French, Elmer R. Ihne. “Method of manufacturing fiber-cement sheets (US Patent 2,859,484, 1958).” November 11, 1958. US Patent No. 2,859,484. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23139. https://asbestosclaims.law/library/23139.
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