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3753827
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Patent number 3,753,827
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Issue date Aug 21, 1973
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3415674
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Patent number 3,415,674
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Issue date Dec 10, 1968
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3305387
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Patent number 3,305,387
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Issue date Feb 21, 1967
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3046216
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Patent number 3,046,216
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Issue date Jul 24, 1962
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C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
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2835107
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Patent number 2,835,107
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Issue date May 20, 1958
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F42 - AMMUNITION BLASTING
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2796362
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Patent number 2,796,362
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Issue date Jun 18, 1957
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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2657153
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Patent number 2,657,153
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Issue date Oct 27, 1953
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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2333151
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Patent number 2,333,151
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Issue date Nov 2, 1943
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES