-
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3485202
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Patent number 3,485,202
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Issue date Dec 23, 1969
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3105457
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Patent number 3,105,457
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Issue date Oct 1, 1963
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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3016035
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Patent number 3,016,035
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Issue date Jan 9, 1962
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2905134
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Patent number 2,905,134
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Issue date Sep 22, 1959
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2864331
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Patent number 2,864,331
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Issue date Dec 16, 1958
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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2835219
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Patent number 2,835,219
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Issue date May 20, 1958
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2821950
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Patent number 2,821,950
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Issue date Feb 4, 1958
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2790410
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Patent number 2,790,410
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Issue date Apr 30, 1957
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2610422
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Patent number 2,610,422
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Issue date Sep 16, 1952
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2551846
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Patent number 2,551,846
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Issue date May 8, 1951
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2483734
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Patent number 2,483,734
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Issue date Oct 4, 1949
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2333273
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Patent number 2,333,273
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Issue date Nov 2, 1943
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2238683
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Patent number 2,238,683
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Issue date Apr 15, 1941
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2208080
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Patent number 2,208,080
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Issue date Jul 16, 1940
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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2192635
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Patent number 2,192,635
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Issue date Mar 5, 1940
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E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES