Mineral-mining Cutter Drum,申请号GB19800011502-传众专利搜索

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发明名称	Mineral-mining Cutter Drum
摘要
申请公布号	GB2050469(A)	申请公布日期	1981.01.07
申请号	GB19800011502	申请日期	1980.04.08
申请人	RICH SERVICES INC ROY	发明人
分类号	E21C35/187;(IPC1-7):E21C35/22	主分类号	E21C35/187
代理机构		代理人
主权项
地址

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