COMBINED DRILL PIPE,申请号SU19884480994-传众专利搜索

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发明名称	COMBINED DRILL PIPE
摘要
申请公布号	SU1740614(A1)	申请公布日期	1992.06.15
申请号	SU19884480994	申请日期	1988.07.19
申请人	G PI "KARAGANDAGIPROSHAKHT"	发明人	ZHUKOV PAVEL I,SU;SHELLER ALEKSANDR G,SU
分类号	E21B17/20;E21B17/05	主分类号	E21B17/20
代理机构		代理人
主权项
地址

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