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George Ritter received US Patent No. 2,392,190 on January 1, 1946, filed June 14, 1944. It was assigned to Ruberoid Co.
The patent's description opens (from the scanned text):
This invention relates to an extrusion machine of the type comprising a die and a stationary core for making pressure pipe from an asbestoscement or flbro-cement composition, and more particularly to an improved core support for such machine.
- Author
- George Ritter
- Published by
- US Patent Office
- Series
- US Patent No. 2,392,190
- Date
- January 1, 1946
- Library no.
- ACL Doc 22157 · asbestosclaims.law/library/22157
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 3 pages · 250 KB
Where it was listed
- Asbestos, March 1946, in its patents department (the year's issues)
Cite this document
George Ritter. “Core Support for Extrusion Machines (US Patent 2,392,190, 1946).” January 1, 1946. US Patent No. 2,392,190. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22157. https://asbestosclaims.law/library/22157.
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