SUPPORTING MINE WALLS WITH BACKFILL,申请号AU19800063674-传众专利搜索

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发明名称	SUPPORTING MINE WALLS WITH BACKFILL
摘要
申请公布号	AU6367480(A)	申请公布日期	1981.04.30
申请号	AU19800063674	申请日期	1980.10.24
申请人	IPI CONTRACTORS AG	发明人	J. A. HAHN;L. DISON
分类号	E21F15/02;E21F15/06;E21F15/08	主分类号	E21F15/02
代理机构		代理人
主权项
地址

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