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发明名称
FRICTION BODY, WRITING TOOLS HAVING THE SAME AND WRITING TOOL SET
摘要
<p>열변색성 필적을 부여하는 필기구를 사용하여 형성된 필적을, 마찰에 의해 발생한 열로 발색(發色), 소색(消色) 또는 변색(變色)시키는 마찰체로서, 상기 마찰체는 지면위를 마찰한 때의 마찰계수가 0.2~1.0의 범위에 있는 마찰체, 상기 마찰체를 구비한 필기구, 상기 마찰체로 이루어지는 필기구세트.</p>
申请公布号
KR101377293(B1)
申请公布日期
2014.03.25
申请号
KR20070122441
申请日期
2007.11.29
申请人
发明人
分类号
B43K5/00;B43K5/18;B43K8/02;B43K23/08;B43K29/00;B43K29/02;B43L19/00
主分类号
B43K5/00
代理机构
代理人
主权项
地址
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