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经营范围
发明名称
Adjustable eraser device
摘要
申请公布号
GB440771(A)
申请公布日期
1936.01.06
申请号
GB19350012135
申请日期
1935.04.23
申请人
CHARLES ALBERT WATROUS
发明人
分类号
B43K29/02
主分类号
B43K29/02
代理机构
代理人
主权项
地址
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