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Mixing plant
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Patent number 4,580,902
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Issue date Apr 8, 1986
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Dunstan & Partners Pty. Ltd
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Trevor G. Dunstan
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B28 - WORKING CEMENT, CLAY, OR STONE
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3185346
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Patent number 3,185,346
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Issue date May 25, 1965
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B28 - WORKING CEMENT, CLAY, OR STONE
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3128014
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Patent number 3,128,014
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Issue date Apr 7, 1964
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B28 - WORKING CEMENT, CLAY, OR STONE
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2776783
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Patent number 2,776,783
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Issue date Jan 8, 1957
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B28 - WORKING CEMENT, CLAY, OR STONE
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2741401
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Patent number 2,741,401
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Issue date Apr 10, 1956
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B28 - WORKING CEMENT, CLAY, OR STONE
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2570367
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Patent number 2,570,367
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Issue date Oct 9, 1951
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B28 - WORKING CEMENT, CLAY, OR STONE
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1601811
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Patent number 1,601,811
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Issue date Oct 5, 1926
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B28 - WORKING CEMENT, CLAY, OR STONE
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1460573
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Patent number 1,460,573
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Issue date Jul 3, 1923
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B28 - WORKING CEMENT, CLAY, OR STONE