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Harold J. Otis and Hesse Jack received US Patent No. 2,446,782 on August 10, 1948, filed January 26, 1946. It was assigned to Johns Manville.
The patent's description opens (from the scanned text):
This invention relates to the manufacture of hard and dense fibro ce'mentitious sheets, and is particularly concerned with an improved method of developing a tough decorative smoothly textured veneer coating for asbestos-cement shingles a'nd'siding units.
- Author
- Harold J. Otis; Hesse Jack
- Published by
- US Patent Office
- Series
- US Patent No. 2,446,782
- Date
- August 10, 1948
- Library no.
- ACL Doc 22950 · asbestosclaims.law/library/22950
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 5 pages · 522 KB
Where it was listed
- Asbestos, September 1948, in its patents department (the year's issues)
Cite this document
Harold J. Otis, Hesse Jack. “Manufacture of Cementitious Sheets (US Patent 2,446,782, 1948).” August 10, 1948. US Patent No. 2,446,782. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22950. https://asbestosclaims.law/library/22950.
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