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发明名称
WORK-PERFORMING MEMBER OF AUGER-DRILLING UNIT
摘要
申请公布号
SU794157(A1)
申请公布日期
1981.01.07
申请号
SU19792712231
申请日期
1979.01.08
申请人
VNI PK UGOLNYJ INSTITUT
发明人
FERANIDI KONSTANTIN ,SU;VAREKHA ZHORZH P,SU;KIM OLGERD V,SU;SUDARIKOV EVGENIJ A,SU;KRAVETS ALEKSEJ G,SU
分类号
E21B10/44;(IPC1-7):E21B10/44
主分类号
E21B10/44
代理机构
代理人
主权项
地址
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