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发明名称
Abrasive implement
摘要
申请公布号
US2429647(A)
申请公布日期
1947.10.28
申请号
US19440529973
申请日期
1944.04.07
申请人
MINNESOTA MINING & MANUFACTURING COMPANY
发明人
RANDOLPH CHALMERS H.
分类号
B24B23/06
主分类号
B24B23/06
代理机构
代理人
主权项
地址
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