An improved internal pipe cutter or oil well casing cutter,申请号GB19300012003-传众专利搜索

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发明名称	An improved internal pipe cutter or oil well casing cutter
摘要
申请公布号	GB341806(A)	申请公布日期	1931.01.22
申请号	GB19300012003	申请日期	1930.04.16
申请人	RICHARD GEORGE BARNARD	发明人
分类号	E21B29/00	主分类号	E21B29/00
代理机构		代理人
主权项
地址

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