PLUG FOR PROVIDING ARTIFICIAL WELL BOTTOM,申请号SU19792811291-传众专利搜索

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发明名称	PLUG FOR PROVIDING ARTIFICIAL WELL BOTTOM
摘要
申请公布号	SU926213(A1)	申请公布日期	1982.05.07
申请号	SU19792811291	申请日期	1979.08.17
申请人	MELENTEV NIKOLAJ YA,SU;CHERENKOV GENNADIJ,SU	发明人	MELENTEV NIKOLAJ YA,SU;CHERENKOV GENNADIJ I,SU
分类号	E21B7/08;(IPC1-7):E21B7/08	主分类号	E21B7/08
代理机构		代理人
主权项
地址

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