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发明名称
Grinding device
摘要
申请公布号
US1874301(A)
申请公布日期
1932.08.30
申请号
US19300436809
申请日期
1930.03.18
申请人
JONES ALLAN H
发明人
JONES ALLAN H.
分类号
B24B5/22
主分类号
B24B5/22
代理机构
代理人
主权项
地址
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