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Vertical conveyor
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Patent number 9,139,368
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Issue date Sep 22, 2015
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Metso Minerals, Inc.
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Keijo Viilo
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B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
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2852126
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Patent number 2,852,126
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Issue date Sep 16, 1958
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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1226730
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Patent number 1,226,730
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Issue date May 22, 1917
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL