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Material crusher
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Patent number 6,926,216
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Issue date Aug 9, 2005
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HRW Limited Partnership
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John Healey
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B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
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Material crusher
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Patent number 6,910,651
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Issue date Jun 28, 2005
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HRW Limited Partnership
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John Healey
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B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
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Rock crusher
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Patent number 6,170,771
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Issue date Jan 9, 2001
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HRW Limited Partnership
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John Healey
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B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...