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Lift wall for a tube mill
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Patent number 7,168,645
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Issue date Jan 30, 2007
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Polysius AG
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Gerhard Blatton
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B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
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Roll mill
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Patent number 5,522,557
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Issue date Jun 4, 1996
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Krupp Polysius AG
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Peter Tiggesbaumker
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B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...