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Screening apparatus
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Patent number 8,636,150
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Issue date Jan 28, 2014
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Dewar of Virginia, Inc.
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Uriah Shelby Akers
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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Multiple screen apparatus
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Patent number 4,065,382
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Issue date Dec 27, 1977
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Derrick Manufacturing Corporation
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H. William Derrick
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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3817376
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Patent number 3,817,376
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Issue date Jun 18, 1974
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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3710940
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Patent number 3,710,940
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Issue date Jan 16, 1973
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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3378142
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Patent number 3,378,142
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Issue date Apr 16, 1968
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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3351201
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Patent number 3,351,201
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Issue date Nov 7, 1967
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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3261469
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Patent number 3,261,469
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Issue date Jul 19, 1966
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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3254767
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Patent number 3,254,767
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Issue date Jun 7, 1966
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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3208594
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Patent number 3,208,594
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Issue date Sep 28, 1965
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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3064812
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Patent number 3,064,812
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Issue date Nov 20, 1962
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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3023904
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Patent number 3,023,904
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Issue date Mar 6, 1962
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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2985279
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Patent number 2,985,279
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Issue date May 23, 1961
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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2978104
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Patent number 2,978,104
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Issue date Apr 4, 1961
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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2748942
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Patent number 2,748,942
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Issue date Jun 5, 1956
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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2363348
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Patent number 2,363,348
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Issue date Nov 21, 1944
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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2314879
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Patent number 2,314,879
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Issue date Mar 30, 1943
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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2298153
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Patent number 2,298,153
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Issue date Oct 6, 1942
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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2283877
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Patent number 2,283,877
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Issue date May 19, 1942
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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2279225
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Patent number 2,279,225
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Issue date Apr 7, 1942
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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2258789
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Patent number 2,258,789
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Issue date Oct 14, 1941
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
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2236341
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Patent number 2,236,341
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Issue date Mar 25, 1941
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B07 - SEPARATING SOLIDS FROM SOLIDS SORTING