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Carbonless copy note pad
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Patent number 9,908,356
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Issue date Mar 6, 2018
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Taiwan Hopax Chemicals Mfg. Co., Ltd.
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Tsung-Tien Kuo
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B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
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Note pad
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Patent number 6,627,285
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Issue date Sep 30, 2003
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Taiwan Hopax Chems Mfg. Co. Ltd.
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Tsung-Tien Kuo
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Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
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Self-stick writing note
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Patent number 6,254,955
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Issue date Jul 3, 2001
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Taiwan Hopax Chems. Mfg. Co., Ltd.
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Tsung-Tien Kuo
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B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER