Improvements in or relating to the drilling of deep wells,申请号GB19460020941-传众专利搜索

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发明名称	Improvements in or relating to the drilling of deep wells
摘要
申请公布号	GB636879(A)	申请公布日期	1950.05.10
申请号	GB19460020941	申请日期	1946.07.12
申请人	ROLEN ARCENJEVITCH JOANNESJAN;AJUB ISMAILOVITCH TAGUIEV;MOISSEE TIMOFEEVITCH GOUSSMAN;JUDITH LVOVNA FISH	发明人
分类号	E21B7/06	主分类号	E21B7/06
代理机构		代理人
主权项
地址

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