METHOD FOR STAYING AND SUPPORTING FIRST TUNNELS OF SMALLER SIZE, DRIFTS AND SHAFTS BY APPLYING ELLIPTICAL RESPECTIVELY OVAL, CLOSED, RING-SHAPED SUPPORTING MEMBERS,申请号HU19880006385-传众专利搜索

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发明名称	METHOD FOR STAYING AND SUPPORTING FIRST TUNNELS OF SMALLER SIZE, DRIFTS AND SHAFTS BY APPLYING ELLIPTICAL RESPECTIVELY OVAL, CLOSED, RING-SHAPED SUPPORTING MEMBERS
摘要
申请公布号	HU206532(B)	申请公布日期	1992.11.30
申请号	HU19880006385	申请日期	1988.12.12
申请人	KIVES,GYOERGY,HU	发明人	KIVES,GYOERGY,HU
分类号	E21D11/00;(IPC1-7):E21D11/00	主分类号	E21D11/00
代理机构		代理人
主权项
地址

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