Spiral vane shearer drum,申请号GB19810035492-传众专利搜索

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发明名称	Spiral vane shearer drum
摘要
申请公布号	GB2089871(A)	申请公布日期	1982.06.30
申请号	GB19810035492	申请日期	1981.11.25
申请人	MINING SUPPLIES LTD	发明人
分类号	E21C25/10;E21C35/18;(IPC1-7):E21C25/10	主分类号	E21C25/10
代理机构		代理人
主权项
地址

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