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发明名称
DRAFTING PEN POINT FOR VERTICAL SURFACES
摘要
申请公布号
US3455639(A)
申请公布日期
1969.07.15
申请号
USD3455639
申请日期
1967.05.23
申请人
KOH I NOOR INC.
发明人
WILLIAM E. DANJCZEK
分类号
B43K8/18;(IPC1-7):B43K5/18;B43K5/16
主分类号
B43K8/18
代理机构
代理人
主权项
地址
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