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3364628
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Patent number 3,364,628
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Issue date Jan 23, 1968
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C03 - GLASS MINERAL OR SLAG WOOL
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3328042
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Patent number 3,328,042
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Issue date Jun 27, 1967
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C03 - GLASS MINERAL OR SLAG WOOL
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3159395
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Patent number 3,159,395
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Issue date Dec 1, 1964
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C03 - GLASS MINERAL OR SLAG WOOL
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3083813
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Patent number 3,083,813
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Issue date Apr 2, 1963
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C03 - GLASS MINERAL OR SLAG WOOL
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3034778
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Patent number 3,034,778
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Issue date May 15, 1962
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C03 - GLASS MINERAL OR SLAG WOOL
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2886335
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Patent number 2,886,335
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Issue date May 12, 1959
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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2880494
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Patent number 2,880,494
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Issue date Apr 7, 1959
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C03 - GLASS MINERAL OR SLAG WOOL
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2832602
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Patent number 2,832,602
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Issue date Apr 29, 1958
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C03 - GLASS MINERAL OR SLAG WOOL
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2826870
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Patent number 2,826,870
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Issue date Mar 18, 1958
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C03 - GLASS MINERAL OR SLAG WOOL
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2529331
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Patent number 2,529,331
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Issue date Nov 7, 1950
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B28 - WORKING CEMENT, CLAY, OR STONE
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2310580
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Patent number 2,310,580
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Issue date Feb 9, 1943
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C03 - GLASS MINERAL OR SLAG WOOL
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2261074
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Patent number 2,261,074
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Issue date Oct 28, 1941
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C03 - GLASS MINERAL OR SLAG WOOL
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1739371
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Patent number 1,739,371
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Issue date Dec 10, 1929
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C03 - GLASS MINERAL OR SLAG WOOL
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1606128
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Patent number 1,606,128
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Issue date Nov 9, 1926
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C03 - GLASS MINERAL OR SLAG WOOL
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1583229
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Patent number 1,583,229
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Issue date May 4, 1926
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C03 - GLASS MINERAL OR SLAG WOOL