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Edward Martinez received US Patent No. 3,328,233 on June 27, 1967, filed July 31, 1964. It was assigned to American Smelting and Refining Co.
The patent's description opens:
This invention relates to concentration of serpentine type asbestos ore.
- Author
- Edward Martinez
- Published by
- US Patent Office
- Series
- US Patent No. 3,328,233
- Date
- June 27, 1967
- Library no.
- ACL Doc 22133 · asbestosclaims.law/library/22133
- Rights
- US government work, in the public domain.
Read or download
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Where it was listed
- Asbestos, August 1967, in its patents department (the year's issues)
Cited on this site
Cite this document
Edward Martinez. “Concentration of asbestos ore (US Patent 3,328,233, 1967).” June 27, 1967. US Patent No. 3,328,233. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22133. https://asbestosclaims.law/library/22133.
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