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3905587
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Patent number 3,905,587
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Issue date Sep 16, 1975
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3866887
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Patent number 3,866,887
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Issue date Feb 18, 1975
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3856275
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Patent number 3,856,275
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Issue date Dec 24, 1974
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3638911
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Patent number 3,638,911
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Issue date Feb 1, 1972
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B60 - VEHICLES IN GENERAL
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3577648
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Patent number 3,577,648
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Issue date May 4, 1971
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3484083
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Patent number 3,484,083
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Issue date Dec 16, 1969
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3458177
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Patent number 3,458,177
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Issue date Jul 29, 1969
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3385571
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Patent number 3,385,571
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Issue date May 28, 1968
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3342461
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Patent number 3,342,461
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Issue date Sep 19, 1967
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3297159
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Patent number 3,297,159
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Issue date Jan 10, 1967
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B28 - WORKING CEMENT, CLAY, OR STONE
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3159288
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Patent number 3,159,288
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Issue date Dec 1, 1964
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3142390
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Patent number 3,142,390
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Issue date Jul 28, 1964
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B28 - WORKING CEMENT, CLAY, OR STONE
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3136564
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Patent number 3,136,564
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Issue date Jun 9, 1964
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B60 - VEHICLES IN GENERAL
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3116051
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Patent number 3,116,051
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Issue date Dec 31, 1963
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3112099
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Patent number 3,112,099
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Issue date Nov 26, 1963
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B28 - WORKING CEMENT, CLAY, OR STONE
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3072387
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Patent number 3,072,387
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Issue date Jan 8, 1963
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3070358
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Patent number 3,070,358
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Issue date Dec 25, 1962
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3054601
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Patent number 3,054,601
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Issue date Sep 18, 1962
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3050159
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Patent number 3,050,159
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Issue date Aug 21, 1962
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2945683
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Patent number 2,945,683
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Issue date Jul 19, 1960
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES