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3853522
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Patent number 3,853,522
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Issue date Dec 10, 1974
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C03 - GLASS MINERAL OR SLAG WOOL
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3802858
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Patent number 3,802,858
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Issue date Apr 9, 1974
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C03 - GLASS MINERAL OR SLAG WOOL
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3754883
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Patent number 3,754,883
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Issue date Aug 28, 1973
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C03 - GLASS MINERAL OR SLAG WOOL
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3607171
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Patent number 3,607,171
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Issue date Sep 21, 1971
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C03 - GLASS MINERAL OR SLAG WOOL
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3419376
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Patent number 3,419,376
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Issue date Dec 31, 1968
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C03 - GLASS MINERAL OR SLAG WOOL
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3410672
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Patent number 3,410,672
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Issue date Nov 12, 1968
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B24 - GRINDING POLISHING
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3399983
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Patent number 3,399,983
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Issue date Sep 3, 1968
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C03 - GLASS MINERAL OR SLAG WOOL
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3303011
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Patent number 3,303,011
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Issue date Feb 7, 1967
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C03 - GLASS MINERAL OR SLAG WOOL
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3248193
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Patent number 3,248,193
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Issue date Apr 26, 1966
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C03 - GLASS MINERAL OR SLAG WOOL
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3240583
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Patent number 3,240,583
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Issue date Mar 15, 1966
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C03 - GLASS MINERAL OR SLAG WOOL
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3192028
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Patent number 3,192,028
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Issue date Jun 29, 1965
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C03 - GLASS MINERAL OR SLAG WOOL
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3151366
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Patent number 3,151,366
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Issue date Oct 6, 1964
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B22 - CASTING POWDER METALLURGY
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3126269
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Patent number 3,126,269
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Issue date Mar 24, 1964
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C03 - GLASS MINERAL OR SLAG WOOL
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2659182
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Patent number 2,659,182
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Issue date Nov 17, 1953
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C03 - GLASS MINERAL OR SLAG WOOL
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2591304
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Patent number 2,591,304
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Issue date Apr 1, 1952
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C03 - GLASS MINERAL OR SLAG WOOL
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2545271
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Patent number 2,545,271
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C03 - GLASS MINERAL OR SLAG WOOL
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2493260
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Patent number 2,493,260
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C03 - GLASS MINERAL OR SLAG WOOL
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2450115
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C03 - GLASS MINERAL OR SLAG WOOL
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2267554
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Patent number 2,267,554
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Issue date Dec 23, 1941
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C03 - GLASS MINERAL OR SLAG WOOL
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2166871
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Patent number 2,166,871
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Issue date Jul 18, 1939
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C03 - GLASS MINERAL OR SLAG WOOL