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John Ferla received US Patent No. 2,361,933 on November 7, 1944, filed November 20, 1940.
The patent's description opens (from the scanned text):
This invention relates to an improvement in apparatus for producing pipe, and more particularly to the production of pipes formed with a bell collar thereon, of asbestos cement, or like composition or moldable material.
- Author
- John Ferla
- Published by
- US Patent Office
- Series
- US Patent No. 2,361,933
- Date
- November 7, 1944
- Library no.
- ACL Doc 22131 · asbestosclaims.law/library/22131
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 4 pages · 358 KB
Where it was listed
- Asbestos, December 1944, in its patents department (the year's issues)
Cite this document
John Ferla. “Compression Apparatus for Producing Pipe (US Patent 2,361,933, 1944).” November 7, 1944. US Patent No. 2,361,933. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22131. https://asbestosclaims.law/library/22131.
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