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Aggregate exposing machine
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Patent number 4,360,333
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Issue date Nov 23, 1982
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Fabcon, Incorporated
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Lonnie G. Fox
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B28 - WORKING CEMENT, CLAY, OR STONE
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3920369
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Patent number 3,920,369
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Issue date Nov 18, 1975
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B28 - WORKING CEMENT, CLAY, OR STONE
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3458885
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Patent number 3,458,885
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Issue date Aug 5, 1969
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B28 - WORKING CEMENT, CLAY, OR STONE
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3324207
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Patent number 3,324,207
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Issue date Jun 6, 1967
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B28 - WORKING CEMENT, CLAY, OR STONE
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2413109
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Patent number 2,413,109
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Issue date Dec 24, 1946
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B28 - WORKING CEMENT, CLAY, OR STONE
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1344087
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Patent number 1,344,087
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Issue date Jun 22, 1920
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B28 - WORKING CEMENT, CLAY, OR STONE