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Screen/mixer
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Patent number 7,591,379
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Issue date Sep 22, 2009
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Sam Dominic Seaton Turnbull
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A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
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1702931
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Patent number 1,702,931
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Issue date Feb 19, 1929
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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1576678
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Patent number 1,576,678
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Issue date Mar 16, 1926
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B28 - WORKING CEMENT, CLAY, OR STONE