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Concrete finishing machine
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Patent number 4,822,210
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Issue date Apr 18, 1989
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Rotec Industries
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Robert F. Oury
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3294001
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Patent number 3,294,001
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Issue date Dec 27, 1966
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3274906
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Patent number 3,274,906
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Issue date Sep 27, 1966
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3252390
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Patent number 3,252,390
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Issue date May 24, 1966
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2827771
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Patent number 2,827,771
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Issue date Mar 25, 1958
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2720822
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Patent number 2,720,822
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Issue date Oct 18, 1955
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2598903
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Patent number 2,598,903
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Issue date Jun 3, 1952
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2255346
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Patent number 2,255,346
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Issue date Sep 9, 1941
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2101031
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Patent number 2,101,031
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Issue date Dec 7, 1937
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B28 - WORKING CEMENT, CLAY, OR STONE
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2072479
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Patent number 2,072,479
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Issue date Mar 2, 1937
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2049115
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Patent number 2,049,115
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Issue date Jul 28, 1936
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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1840970
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Patent number 1,840,970
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Issue date Jan 12, 1932
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES