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Theodore E. Knowlton received US Patent No. 1,701,454 on February 5, 1929, filed September 14, 1925.
The patent's description opens (from the scanned text):
This invention relates to wallboard known generally as plaster board.
- Author
- Theodore E. Knowlton
- Published by
- US Patent Office
- Series
- US Patent No. 1,701,454
- Date
- February 5, 1929
- Library no.
- ACL Doc 23837 · asbestosclaims.law/library/23837
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 5 pages · 243 KB
Where it was listed
- Asbestos, May 1929, in its patents department (the year's issues)
Cite this document
Theodore E. Knowlton. “Wallboard (US Patent 1,701,454, 1929).” February 5, 1929. US Patent No. 1,701,454. US Patent Office. AsbestosClaims.Law Library, ACL Doc 23837. https://asbestosclaims.law/library/23837.
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