Improvements relating to devices for clearing obstructions from wells or bore holes,申请号GB19410003228-传众专利搜索

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发明名称	Improvements relating to devices for clearing obstructions from wells or bore holes
摘要
申请公布号	GB545271(A)	申请公布日期	1942.05.18
申请号	GB19410003228	申请日期	1941.03.10
申请人	JAMES CUTHILL;THE OIL WELL ENGINEERING COMPANY LIMITED	发明人
分类号	E21B31/03	主分类号	E21B31/03
代理机构		代理人
主权项
地址

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