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3923487
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Patent number 3,923,487
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Issue date Dec 2, 1975
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3817733
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Patent number 3,817,733
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Issue date Jun 18, 1974
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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3719463
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Patent number 3,719,463
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Issue date Mar 6, 1973
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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3706543
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Patent number 3,706,543
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Issue date Dec 19, 1972
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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3688812
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Patent number 3,688,812
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Issue date Sep 5, 1972
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3556760
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Patent number 3,556,760
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Issue date Jan 19, 1971
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C03 - GLASS MINERAL OR SLAG WOOL
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3523017
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Patent number 3,523,017
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Issue date Aug 4, 1970
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C03 - GLASS MINERAL OR SLAG WOOL
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3437471
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Patent number 3,437,471
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Issue date Apr 8, 1969
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C03 - GLASS MINERAL OR SLAG WOOL
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3375948
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Patent number 3,375,948
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Issue date Apr 2, 1968
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C03 - GLASS MINERAL OR SLAG WOOL
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3265487
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Patent number 3,265,487
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Issue date Aug 9, 1966
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C03 - GLASS MINERAL OR SLAG WOOL
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3254980
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Patent number 3,254,980
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Issue date Jun 7, 1966
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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3144320
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Patent number 3,144,320
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Issue date Aug 11, 1964
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C03 - GLASS MINERAL OR SLAG WOOL
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3124445
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Patent number 3,124,445
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Issue date Mar 10, 1964
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C03 - GLASS MINERAL OR SLAG WOOL