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Arthur A. Heeren received US Patent No. 2,268,822 on January 6, 1942, filed July 15, 1939. It was assigned to United States Gypsum Co.
The patent's description opens (from the scanned text):
This invention relates to building constructions, and has reference more particularly to ceiling constructions employing cementitious slabs.
- Author
- Arthur A. Heeren
- Published by
- US Patent Office
- Series
- US Patent No. 2,268,822
- Date
- January 6, 1942
- Library no.
- ACL Doc 22002 · asbestosclaims.law/library/22002
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 3 pages · 265 KB
Where it was listed
- Asbestos, March 1942, in its patents department (the year's issues)
Cite this document
Arthur A. Heeren. “Ceiling Construction (US Patent 2,268,822, 1942).” January 6, 1942. US Patent No. 2,268,822. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22002. https://asbestosclaims.law/library/22002.
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