Improvements in or relating to core bits,申请号GB19450028528-传众专利搜索

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发明名称	Improvements in or relating to core bits
摘要
申请公布号	GB601428(A)	申请公布日期	1948.05.05
申请号	GB19450028528	申请日期	1945.10.29
申请人	WHEEL TRUEING TOOL COMPANY OF DELAWARE	发明人
分类号	E21B10/48	主分类号	E21B10/48
代理机构		代理人
主权项
地址

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