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Rotary eraser
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Patent number 5,311,630
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Issue date May 17, 1994
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Midori Co., Ltd.
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Shinsuke Nakamura
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Rotatively rubbing eraser
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Patent number 4,817,226
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Issue date Apr 4, 1989
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Fu-Ching Kuo
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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3061982
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Patent number 3,061,982
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Issue date Nov 6, 1962
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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3029899
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Patent number 3,029,899
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Issue date Apr 17, 1962
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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2564604
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Patent number 2,564,604
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Issue date Aug 14, 1951
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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2555928
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Patent number 2,555,928
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Issue date Jun 5, 1951
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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2534773
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Patent number 2,534,773
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Issue date Dec 19, 1950
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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2431156
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Patent number 2,431,156
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Issue date Nov 18, 1947
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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2420825
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Patent number 2,420,825
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Issue date May 20, 1947
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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2074255
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Patent number 2,074,255
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Issue date Mar 16, 1937
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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1978778
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Patent number 1,978,778
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Issue date Oct 30, 1934
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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1788658
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Patent number 1,788,658
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Issue date Jan 13, 1931
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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1710080
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Patent number 1,710,080
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Issue date Apr 23, 1929
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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1705788
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Patent number 1,705,788
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Issue date Mar 19, 1929
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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1399734
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Patent number 1,399,734
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Issue date Dec 13, 1921
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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1363848
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Patent number 1,363,848
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Issue date Dec 28, 1920
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES