Improvements in and relating to drilling machines for wet drilling in rock, stone, coal or the like,申请号GB19550016643-传众专利搜索

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发明名称	Improvements in and relating to drilling machines for wet drilling in rock, stone, coal or the like
摘要
申请公布号	GB792373(A)	申请公布日期	1958.03.26
申请号	GB19550016643	申请日期	1955.06.09
申请人	HARDYPICK LIMITED	发明人	GREY NORMAN KENDALL
分类号	E21B21/01	主分类号	E21B21/01
代理机构		代理人
主权项
地址

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