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Mobile rock crushing plant
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Patent number 7,464,889
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Issue date Dec 16, 2008
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Johnson Crushers International
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Mark Westerman
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B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
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Mobile rock crushing plant
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Patent number 7,143,968
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Issue date Dec 5, 2006
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Johnson Crushers International
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James Donald Brock
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B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
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Mobile rock crushing plant
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Patent number 6,935,587
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Issue date Aug 30, 2005
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Johnson Crushers International
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James Donald Brock
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B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...