DEVICE FOR AUTOMATIC FILLING UP OF WELL WITH MUD,申请号SU19914915843-传众专利搜索

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发明名称	DEVICE FOR AUTOMATIC FILLING UP OF WELL WITH MUD
摘要
申请公布号	RU2019678(C1)	申请公布日期	1994.09.15
申请号	SU19914915843	申请日期	1991.01.08
申请人	NIZAMUTDINOV MARAT M	发明人	NIZAMUTDINOV MARAT M
分类号	E21B21/08;(IPC1-7):E21B21/08	主分类号	E21B21/08
代理机构		代理人
主权项
地址

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