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3841856
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Patent number 3,841,856
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Issue date Oct 15, 1974
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C03 - GLASS MINERAL OR SLAG WOOL
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3840360
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Patent number 3,840,360
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Issue date Oct 8, 1974
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C03 - GLASS MINERAL OR SLAG WOOL
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3811852
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Patent number 3,811,852
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Issue date May 21, 1974
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C03 - GLASS MINERAL OR SLAG WOOL
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3684475
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Patent number 3,684,475
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Issue date Aug 15, 1972
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C03 - GLASS MINERAL OR SLAG WOOL
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3558295
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Patent number 3,558,295
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Issue date Jan 26, 1971
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3523776
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Patent number 3,523,776
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Issue date Aug 11, 1970
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C03 - GLASS MINERAL OR SLAG WOOL
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3512951
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Patent number 3,512,951
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Issue date May 19, 1970
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C03 - GLASS MINERAL OR SLAG WOOL
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3414464
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Patent number 3,414,464
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Issue date Dec 3, 1968
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C03 - GLASS MINERAL OR SLAG WOOL
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3362806
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Patent number 3,362,806
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Issue date Jan 9, 1968
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C03 - GLASS MINERAL OR SLAG WOOL
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3300291
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Patent number 3,300,291
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Issue date Jan 24, 1967
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C03 - GLASS MINERAL OR SLAG WOOL