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Carlisle K. Roos received US Patent No. 2,250,918 on July 29, 1941, filed August 10, 1940.
The patent's description opens (from the scanned text):
This invention relates to apparatus for manufacturing rigid building elements, such as asbestos shingles having cushioning and sealing means associated therewith, which means are automati cally effective to seal the joints between the overlapping shingles and provide a cushion to prevent breakage when the shingles are applied in the usual manner.
- Author
- Carlisle K. Roos
- Published by
- US Patent Office
- Series
- US Patent No. 2,250,918
- Date
- July 29, 1941
- Library no.
- ACL Doc 22060 · asbestosclaims.law/library/22060
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 5 pages · 483 KB
Where it was listed
- Asbestos, September 1941, in its patents department (the year's issues)
Cite this document
Carlisle K. Roos. “Coating Apparatus for Rigid Building Elements (US Patent 2,250,918, 1941).” July 29, 1941. US Patent No. 2,250,918. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22060. https://asbestosclaims.law/library/22060.
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