Improvements in or relating to coal-cutting machines,申请号GB19390032409-传众专利搜索

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发明名称	Improvements in or relating to coal-cutting machines
摘要
申请公布号	GB536655(A)	申请公布日期	1941.05.22
申请号	GB19390032409	申请日期	1939.12.18
申请人	ALEXANDER ANDERSON;ANDERSON, BOYES & COMPANY LIMITED	发明人
分类号	E21C35/20	主分类号	E21C35/20
代理机构		代理人
主权项
地址

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