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3877919
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Patent number 3,877,919
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Issue date Apr 15, 1975
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C03 - GLASS MINERAL OR SLAG WOOL
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3834975
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Patent number 3,834,975
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Issue date Sep 10, 1974
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C03 - GLASS MINERAL OR SLAG WOOL
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3819347
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Patent number 3,819,347
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Issue date Jun 25, 1974
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C03 - GLASS MINERAL OR SLAG WOOL
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3806396
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Patent number 3,806,396
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Issue date Apr 23, 1974
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C03 - GLASS MINERAL OR SLAG WOOL
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3801297
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Patent number 3,801,297
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Issue date Apr 2, 1974
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C03 - GLASS MINERAL OR SLAG WOOL
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3801411
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Patent number 3,801,411
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Issue date Apr 2, 1974
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C03 - GLASS MINERAL OR SLAG WOOL
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3801296
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Patent number 3,801,296
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Issue date Apr 2, 1974
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C03 - GLASS MINERAL OR SLAG WOOL
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3799753
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Patent number 3,799,753
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Issue date Mar 26, 1974
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C03 - GLASS MINERAL OR SLAG WOOL
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3798015
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Patent number 3,798,015
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Issue date Mar 19, 1974
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C03 - GLASS MINERAL OR SLAG WOOL
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3775080
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Patent number 3,775,080
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Issue date Nov 27, 1973
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C03 - GLASS MINERAL OR SLAG WOOL
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3773486
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Patent number 3,773,486
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Issue date Nov 20, 1973
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C03 - GLASS MINERAL OR SLAG WOOL
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3725027
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Patent number 3,725,027
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Issue date Apr 3, 1973
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C03 - GLASS MINERAL OR SLAG WOOL
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3694181
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Patent number 3,694,181
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Issue date Sep 26, 1972
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C03 - GLASS MINERAL OR SLAG WOOL
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3655355
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Patent number 3,655,355
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Issue date Apr 11, 1972
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C03 - GLASS MINERAL OR SLAG WOOL
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3639112
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Patent number 3,639,112
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Issue date Feb 1, 1972
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C03 - GLASS MINERAL OR SLAG WOOL
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3628936
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Patent number 3,628,936
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Issue date Dec 21, 1971
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C03 - GLASS MINERAL OR SLAG WOOL
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3619159
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Patent number 3,619,159
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Issue date Nov 9, 1971
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C03 - GLASS MINERAL OR SLAG WOOL
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3607183
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Patent number 3,607,183
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Issue date Sep 21, 1971
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C03 - GLASS MINERAL OR SLAG WOOL
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3539324
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Patent number 3,539,324
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Issue date Nov 10, 1970
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C03 - GLASS MINERAL OR SLAG WOOL
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3533250
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Patent number 3,533,250
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Issue date Oct 13, 1970
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C03 - GLASS MINERAL OR SLAG WOOL
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3511627
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Patent number 3,511,627
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Issue date May 12, 1970
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C03 - GLASS MINERAL OR SLAG WOOL
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3505047
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Patent number 3,505,047
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Issue date Apr 7, 1970
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C03 - GLASS MINERAL OR SLAG WOOL
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3505048
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Patent number 3,505,048
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Issue date Apr 7, 1970
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C03 - GLASS MINERAL OR SLAG WOOL
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3477838
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Patent number 3,477,838
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Issue date Nov 11, 1969
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C03 - GLASS MINERAL OR SLAG WOOL