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发明名称
MINERAL GRINDING AIDS
摘要
申请公布号
US3442673(A)
申请公布日期
1969.05.06
申请号
USD3442673
申请日期
1966.06.02
申请人
W.R. GRACE & CO.
发明人
FRANK G. SERAFIN
分类号
B02C23/06;C04B24/02;(IPC1-7):C04B11/14;C04B7/54
主分类号
B02C23/06
代理机构
代理人
主权项
地址
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