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经营范围
发明名称
MECHANICAL PENCIL
摘要
申请公布号
CA426746(A)
申请公布日期
1945.04.10
申请号
CAD426746
申请日期
申请人
SCRIPTO MANUFACTURING COMPANY
发明人
BLANCHARD D. SMITH
分类号
主分类号
代理机构
代理人
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