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发明名称
Selective multicolor pencil
摘要
申请公布号
US2514953(A)
申请公布日期
1950.07.11
申请号
US19470759392
申请日期
1947.07.07
申请人
JACOBSEN WALTER E;JACOBSEN WALTER H
发明人
JACOBSEN WALTER E.;JACOBSEN WALTER H.
分类号
B43K24/10
主分类号
B43K24/10
代理机构
代理人
主权项
地址
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