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Imre Meir Schwartz received US Patent No. 3,628,321 on December 21, 1971, filed November 20, 1969.
The patent's abstract:
Asbestos or like roving (or tape, sliver, or other raw material strand form) is supplied by a metering drive roll to a coating or impregnating station for application of a solution or emulsion. The coated asbestos roving is twisted, and loose and fringe fibers thereof integrally formed into, and secured within the evolving asbestos yarn when the wet material is drawn over a wiping pad. Collection apparatus is employed to twist the material by spinning. The coating, twisting and spinning operations, useful per se, also obviate environmental contamination during the spinning process.
- Author
- Imre Meir Schwartz
- Published by
- US Patent Office
- Series
- US Patent No. 3,628,321
- Date
- December 21, 1971
- Library no.
- ACL Doc 21812 · asbestosclaims.law/library/21812
- Rights
- US government work, in the public domain.
Read or download
Read online Download the PDF PDF · 3 pages · 230 KB
Where it was listed
- Asbestos, June 1972, in its patents department (the year's issues)
Cite this document
Imre Meir Schwartz. “Asbestos processing apparatus (US Patent 3,628,321, 1971).” December 21, 1971. US Patent No. 3,628,321. US Patent Office. AsbestosClaims.Law Library, ACL Doc 21812. https://asbestosclaims.law/library/21812.
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