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Analytic sieving apparatus
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Patent number 4,681,676
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Issue date Jul 21, 1987
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Mikropul Corporation
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Alfred J. Heidinger
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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Carbon black mill
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Patent number 4,600,156
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Issue date Jul 15, 1986
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Robert W. Duyckinck
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B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
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Particulate classifying apparatus
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Patent number 4,523,990
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Issue date Jun 18, 1985
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Mikropul Corporation
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Robert W. Duyckinck
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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Filter bag assembly
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Patent number 4,073,632
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Issue date Feb 14, 1978
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United States Filter Corporation
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Thomas V. Reinauer
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Pulse jet and venturi liner
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Patent number 3,942,962
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Issue date Mar 9, 1976
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U.S. Filter Company
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Robert W. Duyckinck
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL