MINE ROOF SUPPORT ADVANCEMENT CONTROL,申请号AU19760020536-传众专利搜索

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发明名称	MINE ROOF SUPPORT ADVANCEMENT CONTROL
摘要
申请公布号	AU510144(B2)	申请公布日期	1980.06.12
申请号	AU19760020536	申请日期	1976.12.14
申请人	GULLICK DOBSON LTD.	发明人	K. DARBYSHIRE;F. SMALL
分类号	E21D23/14;(IPC1-7):21D23/12;21D23/20	主分类号	E21D23/14
代理机构		代理人
主权项
地址

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