Improvements relating to machines for the mechanical winning of coal or other mineral,申请号GB19550007983-传众专利搜索

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发明名称	Improvements relating to machines for the mechanical winning of coal or other mineral
摘要
申请公布号	GB765952(A)	申请公布日期	1957.01.16
申请号	GB19550007983	申请日期	1955.03.18
申请人	STAMICARBON N.V.	发明人
分类号	E21C27/32	主分类号	E21C27/32
代理机构		代理人
主权项
地址

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