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3859072
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Patent number 3,859,072
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Issue date Jan 7, 1975
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C03 - GLASS MINERAL OR SLAG WOOL
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3837830
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Patent number 3,837,830
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Issue date Sep 24, 1974
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F28 - HEAT EXCHANGE IN GENERAL
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3508313
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Patent number 3,508,313
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Issue date Apr 28, 1970
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C03 - GLASS MINERAL OR SLAG WOOL
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3427143
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Patent number 3,427,143
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Issue date Feb 11, 1969
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C03 - GLASS MINERAL OR SLAG WOOL
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3371409
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Patent number 3,371,409
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Issue date Mar 5, 1968
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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3332764
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Patent number 3,332,764
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Issue date Jul 25, 1967
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C03 - GLASS MINERAL OR SLAG WOOL
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3249414
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Patent number 3,249,414
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Issue date May 3, 1966
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C03 - GLASS MINERAL OR SLAG WOOL
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3155477
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Patent number 3,155,477
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Issue date Nov 3, 1964
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C03 - GLASS MINERAL OR SLAG WOOL
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3141754
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Patent number 3,141,754
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Issue date Jul 21, 1964
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C03 - GLASS MINERAL OR SLAG WOOL
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3091105
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Patent number 3,091,105
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Issue date May 28, 1963
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C03 - GLASS MINERAL OR SLAG WOOL
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3091104
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Patent number 3,091,104
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Issue date May 28, 1963
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C03 - GLASS MINERAL OR SLAG WOOL
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2779135
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Patent number 2,779,135
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Issue date Jan 29, 1957
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C03 - GLASS MINERAL OR SLAG WOOL
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2771710
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Patent number 2,771,710
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C03 - GLASS MINERAL OR SLAG WOOL
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2754626
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Patent number 2,754,626
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C03 - GLASS MINERAL OR SLAG WOOL
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2684556
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Patent number 2,684,556
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Issue date Jul 27, 1954
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C03 - GLASS MINERAL OR SLAG WOOL
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2613479
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Patent number 2,613,479
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Issue date Oct 14, 1952
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C03 - GLASS MINERAL OR SLAG WOOL
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2552108
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Patent number 2,552,108
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Issue date May 8, 1951
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C03 - GLASS MINERAL OR SLAG WOOL
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2545729
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Patent number 2,545,729
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Issue date Mar 20, 1951
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C03 - GLASS MINERAL OR SLAG WOOL