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Stephen J. Kelley received US Patent No. 2,213,249 on September 3, 1940, filed July 23, 1934. It was assigned to Armstrong Cork Co.
The patent's description opens (from the scanned text):
My invention relates to an insulation board and method of making the same and more particularly to an insulation board which is structurally strong, has high resistance to bending stress, is light in weight and possesses good insulating properties, and to a method for economically and 10 efllciently manufacturing the same.
- Author
- Stephen J. Kelley
- Published by
- US Patent Office
- Series
- US Patent No. 2,213,249
- Date
- September 3, 1940
- Library no.
- ACL Doc 22822 · asbestosclaims.law/library/22822
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 6 pages · 771 KB
Where it was listed
- Asbestos, October 1940, in its patents department (the year's issues)
Cite this document
Stephen J. Kelley. “Insulation Board (US Patent 2,213,249, 1940).” September 3, 1940. US Patent No. 2,213,249. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22822. https://asbestosclaims.law/library/22822.
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