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Edward Martinez received US Patent No. 3,493,108 on February 3, 1970, filed May 10, 1967.
The patent's description opens:
This invention relates to concentration of asbestos ore.
- Author
- Edward Martinez
- Published by
- US Patent Office
- Series
- US Patent No. 3,493,108
- Date
- February 3, 1970
- Library no.
- ACL Doc 22134 · asbestosclaims.law/library/22134
- Rights
- US government work, in the public domain.
Read or download
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Where it was listed
- Asbestos, March 1970, in its patents department (the year's issues)
Cited on this site
Cite this document
Edward Martinez. “Concentration of asbestos ore (US Patent 3,493,108, 1970).” February 3, 1970. US Patent No. 3,493,108. US Patent Office. AsbestosClaims.Law Library, ACL Doc 22134. https://asbestosclaims.law/library/22134.
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