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3844511
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Patent number 3,844,511
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Issue date Oct 29, 1974
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B28 - WORKING CEMENT, CLAY, OR STONE
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3844510
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Patent number 3,844,510
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Issue date Oct 29, 1974
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3838494
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Patent number 3,838,494
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Issue date Oct 1, 1974
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3831890
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Patent number 3,831,890
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Issue date Aug 27, 1974
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3752949
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Patent number 3,752,949
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Issue date Aug 14, 1973
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3678971
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Patent number 3,678,971
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Issue date Jul 25, 1972
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3661186
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Patent number 3,661,186
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Issue date May 9, 1972
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3578036
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Patent number 3,578,036
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Issue date May 11, 1971
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B28 - WORKING CEMENT, CLAY, OR STONE
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3561501
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Patent number 3,561,501
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Issue date Feb 9, 1971
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3364711
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Patent number 3,364,711
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Issue date Jan 23, 1968
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3185414
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Patent number 3,185,414
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Issue date May 25, 1965
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2918103
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Patent number 2,918,103
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Issue date Dec 22, 1959
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2814326
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Patent number 2,814,326
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Issue date Nov 26, 1957
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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2742077
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Patent number 2,742,077
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Issue date Apr 17, 1956
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...