Improvements in or relating to rock-drills and like tools,申请号GB19310015823-传众专利搜索

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发明名称	Improvements in or relating to rock-drills and like tools
摘要
申请公布号	GB379374(A)	申请公布日期	1932.08.29
申请号	GB19310015823	申请日期	1931.05.29
申请人	JOHN LEONARD HOLMAN;PERCY MYNORS HOLMAN;HOLMAN BROTHERS LIMITED	发明人
分类号	B25D17/08	主分类号	B25D17/08
代理机构		代理人
主权项
地址

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