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经营范围
发明名称
ROTARY-BIT DRILL
摘要
申请公布号
SU885535(A1)
申请公布日期
1981.11.30
申请号
SU19802882108
申请日期
1980.02.11
申请人
MO GEOLOGORAZVEDOCHNYJ I IM. S.ORDZHONIKIDZE
发明人
LOBANOV DMITRIJ P,SU;FONBERSHTEJN EFIM G,SU;EKOMASOV SERGEJ P,SU;SADYKOV GALIMKHAN S,SU
分类号
E21B10/26;(IPC1-7):E21B10/26
主分类号
E21B10/26
代理机构
代理人
主权项
地址
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