UNDERSTRUCTURE OF DRILL RIG UNIT,申请号SU19752139344-传众专利搜索

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发明名称	UNDERSTRUCTURE OF DRILL RIG UNIT
摘要
申请公布号	SU581226(A1)	申请公布日期	1977.11.25
申请号	SU19752139344	申请日期	1975.05.27
申请人	MIKHAJLOV LEV N,SU;VALIEV ZAIL Z,SU	发明人	MIKHAJLOV LEV N,SU;VALIEV ZAIL Z,SU
分类号	E21B3/06;(IPC1-7):E21B3/06	主分类号	E21B3/06
代理机构		代理人
主权项
地址

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