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George H. Ellis received US Patent No. 1,562,499 on November 24, 1925, filed August 8, 1923.
The patent's description opens (from the scanned text):
This invention relates to a plaster board and method of making the same.
- Author
- George H. Ellis
- Published by
- US Patent Office
- Series
- US Patent No. 1,562,499
- Date
- November 24, 1925
- Library no.
- ACL Doc 22783 · asbestosclaims.law/library/22783
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 4 pages · 389 KB
Where it was listed
- Asbestos, January 1926, in its patents department (the year's issues)
Cite this document
George H. Ellis. “Insulating Plaster Board (US Patent 1,562,499, 1925).” November 24, 1925. US Patent No. 1,562,499. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22783. https://asbestosclaims.law/library/22783.
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