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经营范围
发明名称
Thermochromic pen
摘要
申请公布号
KR20110002107(U)
申请公布日期
2011.03.04
申请号
KR20090011078U
申请日期
2009.08.25
申请人
发明人
分类号
B43K29/00
主分类号
B43K29/00
代理机构
代理人
主权项
地址
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