Improvements in and relating to chuck mechanism for drill rods,申请号GB19370014834-传众专利搜索

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发明名称	Improvements in and relating to chuck mechanism for drill rods
摘要
申请公布号	GB494034(A)	申请公布日期	1938.10.19
申请号	GB19370014834	申请日期	1937.05.28
申请人	SULLIVAN MACHINERY COMPANY	发明人
分类号	E21B19/08	主分类号	E21B19/08
代理机构		代理人
主权项
地址

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