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Silica catalyst supports
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Patent number 4,783,435
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Issue date Nov 8, 1988
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Mallinckrodt, Inc.
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John A. Dreibelbis
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B24 - GRINDING POLISHING
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Method of descaling metal sheets
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Patent number 4,406,761
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Issue date Sep 27, 1983
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Kabushiki Kaisha Kobe Seiko Sho
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Kazutoshi Shimogori
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Apparatus for descaling metal strips
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Patent number 4,019,282
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Issue date Apr 26, 1977
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Ford B. Cauffiel
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Web abrading assembly
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Issue date Aug 10, 1976
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David Gessner Company
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John Spencer
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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Patent number 3,888,048
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Issue date Jun 10, 1975
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Patent number 3,882,648
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B24 - GRINDING POLISHING
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Issue date Dec 25, 1973
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B24 - GRINDING POLISHING
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3455136
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3266196
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Issue date Aug 16, 1966
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B24 - GRINDING POLISHING
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Patent number 2,759,301
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B24 - GRINDING POLISHING
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B24 - GRINDING POLISHING
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Patent number 2,592,161
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Issue date Apr 8, 1952
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B24 - GRINDING POLISHING