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Feria John received US Patent No. 2,283,921 on May 26, 1942, filed December 23, 1938.
The patent's description opens (from the scanned text):
This invention relates to an improvement in apparatus forproducing composition pipes, and more particularly to the producing of such pipes from a composition preferably containing asbestos and cement. ' The object of this invention is to improve the manner of forming composition tubes. or pipes and, the removal thereof fromthe apparatus at maximum speed without injury to the pipes during the removal.
- Author
- Feria John
- Published by
- US Patent Office
- Series
- US Patent No. 2,283,921
- Date
- May 26, 1942
- Library no.
- ACL Doc 21685 · asbestosclaims.law/library/21685
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 8 pages · 859 KB
Where it was listed
- Asbestos, June 1942, in its patents department (the year's issues)
Cite this document
Feria John. “Apparatus for Molding Pipe (US Patent 2,283,921, 1942).” May 26, 1942. US Patent No. 2,283,921. US Patent Office. AsbestosClaims.Law Library, ACL Doc 21685. https://asbestosclaims.law/library/21685.
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