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经营范围
发明名称
Drafting pencil
摘要
申请公布号
US2514003(A)
申请公布日期
1950.07.04
申请号
US19440554563
申请日期
1944.09.18
申请人
KEUFFEL & ESSER COMPANY
发明人
MARTIN RAYMOND I.
分类号
B43K21/00;B43L13/02
主分类号
B43K21/00
代理机构
代理人
主权项
地址
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