Improvements in and relating to stop or mounting rings for use with bore hole casing,申请号GB19590009386-传众专利搜索

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发明名称	Improvements in and relating to stop or mounting rings for use with bore hole casing
摘要
申请公布号	GB874136(A)	申请公布日期	1961.08.02
申请号	GB19590009386	申请日期	1959.03.18
申请人	ALBERT EDWARD ATKINSON	发明人
分类号	E21B37/02	主分类号	E21B37/02
代理机构		代理人
主权项
地址

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