Improvements in or relating to a well cleaning device,申请号GB19470021200-传众专利搜索

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发明名称	Improvements in or relating to a well cleaning device
摘要
申请公布号	GB645617(A)	申请公布日期	1950.11.01
申请号	GB19470021200	申请日期	1947.08.05
申请人	EDGAR WALLACE MCGAFFEY	发明人
分类号	E21B37/08	主分类号	E21B37/08
代理机构		代理人
主权项
地址

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