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经营范围
发明名称
DRILLING RIG
摘要
申请公布号
SU692975(A1)
申请公布日期
1979.10.25
申请号
SU19772515399
申请日期
1977.08.02
申请人
PODKOPAEV PETR A,SU;SAKHNOV EVGENIJ V,SU
发明人
PODKOPAEV PETR A,SU;SAKHNOV EVGENIJ V,SU
分类号
E21B19/14;(IPC1-7):E21B19/14
主分类号
E21B19/14
代理机构
代理人
主权项
地址
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