Improvements relating to drilling or boring tools,申请号GB19370033333-传众专利搜索

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发明名称	Improvements relating to drilling or boring tools
摘要
申请公布号	GB500664(A)	申请公布日期	1939.02.14
申请号	GB19370033333	申请日期	1937.12.02
申请人	GEORGE RAYMOND SNEWIN STOW	发明人
分类号	E21B10/00	主分类号	E21B10/00
代理机构		代理人
主权项
地址

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