MECHANISM FOR RETAINING A DRILLING STRING,申请号SU19782702988-传众专利搜索

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发明名称	MECHANISM FOR RETAINING A DRILLING STRING
摘要
申请公布号	SU848576(A2)	申请公布日期	1981.07.23
申请号	SU19782702988	申请日期	1978.12.27
申请人	SP PK BYURO AVTOM GLUBOKOGO RAZVEDOCHNOGO BURENIYA V PROMYSHLENNOGO OBEDINENIYA "SOYUZGEOTEKHNIKA"	发明人	BARSUKOV GENNADIJ I,SU;LYS FEDOR S,SU;MALIN BORIS V,SU;MIKHAJLOV GENNADIJ B,SU;RAVICH-SHCHERBO ROMAN YU,SU;SHRAGO LEONID G,SU
分类号	E21B19/10;(IPC1-7):E21B19/10	主分类号	E21B19/10
代理机构		代理人
主权项
地址

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