Improvements in chain coal cutting machines for use in mines,申请号GB19380034024-传众专利搜索

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发明名称	Improvements in chain coal cutting machines for use in mines
摘要
申请公布号	GB521611(A)	申请公布日期	1940.05.27
申请号	GB19380034024	申请日期	1938.11.23
申请人	NORMAN JAMES MUSCHAMP	发明人
分类号	B27B17/14;E21C25/30	主分类号	B27B17/14
代理机构		代理人
主权项
地址

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