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经营范围
发明名称
Eraser cleaner
摘要
申请公布号
US2172914(A)
申请公布日期
1939.09.12
申请号
US19380200174
申请日期
1938.04.05
申请人
HERBERT C. MCCUE
发明人
SEAMS EARL F.
分类号
B43L21/02
主分类号
B43L21/02
代理机构
代理人
主权项
地址
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