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John Ferla received US Patent No. 2,528,353 on October 31, 1950, filed November 3, 1944.
The patent's description opens (from the scanned text):
This invention relates to improvements in Apparatus ior Producing Pipes, particularly from a composition or asbestos and cement, either as a complete pipe or as a coating or covering on a shell or pipe, or to form a pipe which may be split longitudinally to form sheeting.
- Author
- John Ferla
- Published by
- US Patent Office
- Series
- US Patent No. 2,528,353
- Date
- October 31, 1950
- Library no.
- ACL Doc 21717 · asbestosclaims.law/library/21717
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 10 pages · 1.0 MB
Where it was listed
- Asbestos, December 1950, in its patents department (the year's issues)
Cite this document
John Ferla. “Apparatus for producing pipes (US Patent 2,528,353, 1950).” October 31, 1950. US Patent No. 2,528,353. US Patent Office. AsbestosClaims.Law Library, ACL Doc 21717. https://asbestosclaims.law/library/21717.
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