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Magnet screen device
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Patent number 11,150,549
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Issue date Oct 19, 2021
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Izumi-Cosmo Company, Limited
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Teruyuki Abe
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Display board assembly
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Patent number 7,993,142
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Issue date Aug 9, 2011
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Acco Brands USA LLC
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Seesong Kang
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Marker board
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Patent number 7,874,842
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Issue date Jan 25, 2011
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Acco Brands USA LLC
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Steven J. Beno
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Dry erase board for magnets
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Patent number 7,119,048
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Issue date Oct 10, 2006
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Off the Wall Creations, LLC
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Bert Staadecker
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Visual aid system
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Patent number 5,393,232
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Issue date Feb 28, 1995
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William C. Haines
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Drafting device
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Patent number 5,386,640
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Issue date Feb 7, 1995
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Chiang-Ming Chen
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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White board
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Patent number 4,996,110
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Issue date Feb 26, 1991
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Bridgestone Corporation
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Itsuo Tanuma
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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3654711
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Patent number 3,654,711
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Issue date Apr 11, 1972
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES