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Method of preparing gypsum products
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Patent number 5,575,844
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Issue date Nov 19, 1996
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BPB Industries Public Limited Company
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John J. Bradshaw
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B28 - WORKING CEMENT, CLAY, OR STONE
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Mixer
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Patent number 5,484,200
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Issue date Jan 16, 1996
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BPB Industries Public Limited Company
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John J. Bradshaw
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B28 - WORKING CEMENT, CLAY, OR STONE
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Concrete
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Patent number 4,383,862
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Issue date May 17, 1983
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Domocon S.A.
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John M. Dyson
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B28 - WORKING CEMENT, CLAY, OR STONE
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3667737
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Patent number 3,667,737
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Issue date Jun 6, 1972
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B28 - WORKING CEMENT, CLAY, OR STONE
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2522040
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Patent number 2,522,040
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Issue date Sep 12, 1950
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B28 - WORKING CEMENT, CLAY, OR STONE
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2507349
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Patent number 2,507,349
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Issue date May 9, 1950
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B28 - WORKING CEMENT, CLAY, OR STONE
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1992208
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Patent number 1,992,208
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Issue date Feb 26, 1935
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B28 - WORKING CEMENT, CLAY, OR STONE
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1769309
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Patent number 1,769,309
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Issue date Jul 1, 1930
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B28 - WORKING CEMENT, CLAY, OR STONE
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1660243
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Patent number 1,660,243
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Issue date Feb 21, 1928
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B28 - WORKING CEMENT, CLAY, OR STONE
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1620915
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Patent number 1,620,915
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Issue date Mar 15, 1927
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B28 - WORKING CEMENT, CLAY, OR STONE
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1588059
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Patent number 1,588,059
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Issue date Jun 8, 1926
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B28 - WORKING CEMENT, CLAY, OR STONE
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1194355
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Patent number 1,194,355
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Issue date Aug 15, 1916
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B28 - WORKING CEMENT, CLAY, OR STONE
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1137294
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Patent number 1,137,294
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Issue date Apr 27, 1915
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B28 - WORKING CEMENT, CLAY, OR STONE
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1065365
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Patent number 1,065,365
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Issue date Jun 24, 1913
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B28 - WORKING CEMENT, CLAY, OR STONE
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991814
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Patent number 991,814
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Issue date May 9, 1911
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B28 - WORKING CEMENT, CLAY, OR STONE
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958421
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Patent number 958,421
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Issue date May 17, 1910
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B28 - WORKING CEMENT, CLAY, OR STONE
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886768
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Patent number 886,768
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Issue date May 5, 1908
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B28 - WORKING CEMENT, CLAY, OR STONE
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806214
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Patent number 806,214
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Issue date Dec 5, 1905
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B28 - WORKING CEMENT, CLAY, OR STONE