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发明名称
Writing instrument for water-metachromatic members
摘要
申请公布号
HK1072920(A1)
申请公布日期
2007.01.19
申请号
HK20050105514
申请日期
2005.06.29
申请人
发明人
分类号
A63H33/22;B43K;A63H33/00;B41M3/00;B43K11/00;B43K27/08;B44D2/00;B44F1/10;D06M11/79;D06P1/00;D06Q1/10;G09B11/00
主分类号
A63H33/22
代理机构
代理人
主权项
地址
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