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经营范围
发明名称
Eraser holder
摘要
申请公布号
US2439162(A)
申请公布日期
1948.04.06
申请号
US19460694460
申请日期
1946.09.03
申请人
WALTER EDWARDS
发明人
EDWARDS WALTER
分类号
B43L19/00
主分类号
B43L19/00
代理机构
代理人
主权项
地址
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