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经营范围
发明名称
Rubbing appliance
摘要
申请公布号
US2112593(A)
申请公布日期
1938.03.29
申请号
US19370119491
申请日期
1937.01.07
申请人
CAMPBELL ARTHUR A
发明人
CAMPBELL ARTHUR A.
分类号
B24D15/02
主分类号
B24D15/02
代理机构
代理人
主权项
地址
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