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发明名称
DRILL STRING DISCONNECTOR
摘要
申请公布号
SU973784(A1)
申请公布日期
1982.11.15
申请号
SU19813258125
申请日期
1981.03.06
申请人
DO G PK EKSPEREMENTALNYJ I KOMPLEKSNOJ MEKHANIZAUII SHAKHT "DONGIPROUGLEMASH"
发明人
KONDRATEV EVGENIJ A,SU;BARANOV OLEG N,SU
分类号
E21B17/06;(IPC1-7):E21B17/06
主分类号
E21B17/06
代理机构
代理人
主权项
地址
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