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经营范围
发明名称
Eraser cleaner
摘要
申请公布号
US1757545(A)
申请公布日期
1930.05.06
申请号
US19270239471
申请日期
1927.12.12
申请人
FREDERICK PALMER JOHN
发明人
PALMER JOHN FREDERICK
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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