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发明名称
DEVICE FOR THE HYDRAULIC EXTRACTION AND GRADING OF CLAYS AND ASSOCIATED MATERIALS
摘要
申请公布号
GB1317202(A)
申请公布日期
1973.05.16
申请号
GBD1317202
申请日期
1970.07.27
申请人
KENT A F
发明人
分类号
E21C45/00;(IPC1-7):E21C41/14
主分类号
E21C45/00
代理机构
代理人
主权项
地址
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