MARTINEZ, JACKIE

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5205414 Process for improving the concentration of non-magnetic high specific gravity mineralsExpiredJun 17, 91Apr 27, 93[B03C]
5193687 Gravity separators having metallic troughs, especially Humphreys spiralsExpiredJul 24, 92Mar 16, 93[B03C]
4659457 Gravity-magnetic ore separators and methodsExpiredSep 30, 85Apr 21, 87[B03C]
4565624 Gravity--magnetic ore separatorsExpiredApr 04, 83Jan 21, 86[B03C]

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