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发明名称
PREPARATION OF SLUDGE DEPOSITION FIELD IN AN AREA OF INCREASED CRUMP HAZARD
摘要
申请公布号
PL262055(A2)
申请公布日期
1987.10.19
申请号
PL19860262055
申请日期
1986.10.24
申请人
发明人
分类号
E21C39/00;E21F;E21F17/00;(IPC1-7):E21F/
主分类号
E21C39/00
代理机构
代理人
主权项
地址
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