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Vacuum pug mill
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Patent number 10,005,051
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Issue date Jun 26, 2018
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Jared Paz
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B28 - WORKING CEMENT, CLAY, OR STONE
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Clay mixing apparatus
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Patent number 9,016,927
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Issue date Apr 28, 2015
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Nidec-Shimpo Corporation
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Motoki Kuriki
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B28 - WORKING CEMENT, CLAY, OR STONE
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Clay kneader
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Patent number 8,011,823
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Issue date Sep 6, 2011
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NGK Insulators, Ltd.
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Hidetoshi Suzuki
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B28 - WORKING CEMENT, CLAY, OR STONE
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Vacuum pug mill
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Patent number 5,716,130
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Issue date Feb 10, 1998
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Randolph C. Wood
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B28 - WORKING CEMENT, CLAY, OR STONE
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3574345
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Issue date Apr 13, 1971
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B28 - WORKING CEMENT, CLAY, OR STONE
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2026782
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Issue date Jan 7, 1936
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B28 - WORKING CEMENT, CLAY, OR STONE
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1626675
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Issue date May 3, 1927
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B28 - WORKING CEMENT, CLAY, OR STONE
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1623287
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Patent number 1,623,287
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Issue date Apr 5, 1927
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B28 - WORKING CEMENT, CLAY, OR STONE