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Writing implement
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Patent number 11,390,111
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Issue date Jul 19, 2022
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Kabushiki Kaisha Pilot Corporation
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Takashi Iwahara
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Thermochromic writing tool
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Patent number 10,787,025
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Issue date Sep 29, 2020
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Kabushiki Kaisha Pilot Corporation
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Masahiro Kogure
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Stylus
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Patent number 9,594,441
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Issue date Mar 14, 2017
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Quanta Computer Inc.
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Yun-Cheng Liu
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Writing utensil
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Patent number 9,573,410
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Issue date Feb 21, 2017
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Zebra Co., Ltd.
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Yoshitoshi Aizawa
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Writing instrument
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Patent number 9,452,634
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Issue date Sep 27, 2016
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Craig C. Mock
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Writing implement
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Patent number 9,315,066
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Issue date Apr 19, 2016
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Montblanc-Simplo GmbH
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Stefan Niemeyer
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Thermochromic writing instrument
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Patent number 9,266,379
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Issue date Feb 23, 2016
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The Pilot Ink Co., Ltd.
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Yoshinori Imamura
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Thermochromic writing instrument
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Patent number 9,233,574
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Issue date Jan 12, 2016
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The Pilot Ink Co., Ltd.
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Yoshinori Imamura
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Adjustable length pen holder
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Patent number 8,408,832
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Issue date Apr 2, 2013
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Scott E. Andochick
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Thermochromic writing instrument
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Patent number 8,322,937
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Issue date Dec 4, 2012
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The Pilot Ink Co., Ltd.
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Yoshinori Imamura
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Advancing/retracting mechanism
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Patent number 7,066,042
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Issue date Jun 27, 2006
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Sanford L.P.
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Neville E. Andrews
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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Fountain pen
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Patent number 6,186,687
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Issue date Feb 13, 2001
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Montblanc-Simplo GmbH
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Eckhard Fuchs
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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3453057
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Patent number 3,453,057
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Issue date Jul 1, 1969
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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3333576
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Patent number 3,333,576
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Issue date Aug 1, 1967
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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3297002
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Patent number 3,297,002
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Issue date Jan 10, 1967
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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3187724
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Patent number 3,187,724
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Issue date Jun 8, 1965
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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3153401
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Patent number 3,153,401
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Issue date Oct 20, 1964
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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3139066
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Patent number 3,139,066
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Issue date Jun 30, 1964
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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3071113
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Patent number 3,071,113
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Issue date Jan 1, 1963
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES
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2417984
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Patent number 2,417,984
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Issue date Mar 25, 1947
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B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES