Mine-roof Supports,申请号GB19790008418-传众专利搜索

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发明名称	Mine-roof Supports
摘要
申请公布号	GB2044331(A)	申请公布日期	1980.10.15
申请号	GB19790008418	申请日期	1979.03.09
申请人	DOBSON PARK INDUSTRIES LTD	发明人
分类号	E21D23/00;E21D23/04;(IPC1-7):E21D23/00	主分类号	E21D23/00
代理机构		代理人
主权项
地址

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