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发明名称
MECHANICAL PENCIL
摘要
申请公布号
CA707554(A)
申请公布日期
1965.04.13
申请号
CAD707554
申请日期
申请人
FRANK T. JOHMANN
发明人
FRANK T. JOHMANN
分类号
主分类号
代理机构
代理人
主权项
地址
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