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发明名称
WELL
摘要
申请公布号
SU640002(A1)
申请公布日期
1978.12.30
申请号
SU19762329615
申请日期
1976.02.24
申请人
NIZOVKIN VYACHESLAV M,SU
发明人
NIZOVKIN VYACHESLAV M,SU
分类号
E03B3/18;E21B43/08;(IPC1-7):E03B3/18
主分类号
E03B3/18
代理机构
代理人
主权项
地址
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