MINING AND BOLTING METHOD AND APPARATUS,申请号GB19810013316-传众专利搜索

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发明名称	MINING AND BOLTING METHOD AND APPARATUS
摘要
申请公布号	GB2075091(B)	申请公布日期	1984.09.19
申请号	GB19810013316	申请日期	1981.04.30
申请人	INGERSOLL RAND CO	发明人
分类号	E21C35/00;E21C41/16;E21D20/00;E21D23/00;(IPC1-7):E21D23/00	主分类号	E21C35/00
代理机构		代理人
主权项
地址

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