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Collapsible pleated filter element
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Patent number 6,740,137
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Issue date May 25, 2004
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3M Innovative Properties Company
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James O. Kubokawa
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Multiple abrasive assembly and method
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Patent number 6,261,164
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Issue date Jul 17, 2001
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3M Innovative Properties Company
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Allen J. Rivard
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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Multiple abrasive assembly and method
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Patent number 6,234,886
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Issue date May 22, 2001
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3M Innovative Properties Company
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Allen J. Rivard
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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Masking device with tape tracking member
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Patent number 4,990,214
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Issue date Feb 5, 1991
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Minnesota Mining and Manufacturing Company
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Robert H. Heil
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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Masking machine
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Patent number 4,915,769
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Issue date Apr 10, 1990
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Minnesota Mining and Manufacturing Company
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Robert H. Heil
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL