Improvements in or relating to mining machines,申请号GB19470000704-传众专利搜索

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发明名称	Improvements in or relating to mining machines
摘要
申请公布号	GB625463(A)	申请公布日期	1949.06.28
申请号	GB19470000704	申请日期	1947.01.08
申请人	WILLIAM ARCHIBALD LOGAN;THE LOGAN MINING MACHINERY COMPANY LIMITED	发明人
分类号	E21C29/10	主分类号	E21C29/10
代理机构		代理人
主权项
地址

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