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Feria John received US Patent No. 2,200,268 on May 14, 1940, filed September 22, 1938.
The patent's description opens (from the scanned text):
The invention relates 'to an apparatus for manufacturing pipes from a cementitious composition.
- Author
- Feria John
- Published by
- US Patent Office
- Series
- US Patent No. 2,200,268
- Date
- May 14, 1940
- Library no.
- ACL Doc 22975 · asbestosclaims.law/library/22975
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 5 pages · 449 KB
Where it was listed
- Asbestos, July 1940, in its patents department (the year's issues)
Cite this document
Feria John. “Manufacturing Pipes from Cementitious Composition (US Patent 2,200,268, 1940).” May 14, 1940. US Patent No. 2,200,268. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22975. https://asbestosclaims.law/library/22975.
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