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发明名称
EXTERNAL PIPE-CATCHING DEVICE
摘要
申请公布号
SU1017787(A1)
申请公布日期
1983.05.15
申请号
SU19752199680
申请日期
1975.12.16
申请人
AJDYNOV SOLTAN L,SU
发明人
AJDYNOV SOLTAN L,SU
分类号
E21B31/18;(IPC1-7):E21B31/18
主分类号
E21B31/18
代理机构
代理人
主权项
地址
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