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William J. Peters
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Big Stone, VA, US
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last 30 patents
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Patent Grant
Hydraulic scroll auger mining system and method of using the same
Patent number
6,293,628
Issue date
Sep 25, 2001
Amvest Systems Inc.
Jeffrey J. Schwoebel
E21 - EARTH DRILLING MINING
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Patent Grant
Self-propelled, mobile articulated tramming haulage conveyor system...
Patent number
6,283,277
Issue date
Sep 4, 2001
Amvest Systems? Inc.
Gregory W. Smith
E21 - EARTH DRILLING MINING
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Patent Grant
Horizontal remote mining system, and method
Patent number
5,879,057
Issue date
Mar 9, 1999
Amvest Corporation
Jeffrey J. Schwoebel
E21 - EARTH DRILLING MINING