METHOD FOR BRACING AND SUPPORTING FIRST TUNNELS, DRIFTS AND SHAFTS OF SMALLER SIYE BY THE APPLICATION OF ELLEIPTIC RESPECTIVELY OVIFORM CLOSED ANNULAR SUPPORTING ELEMENTS,申请号HU19880006385-传众专利搜索

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发明名称	METHOD FOR BRACING AND SUPPORTING FIRST TUNNELS, DRIFTS AND SHAFTS OF SMALLER SIYE BY THE APPLICATION OF ELLEIPTIC RESPECTIVELY OVIFORM CLOSED ANNULAR SUPPORTING ELEMENTS
摘要
申请公布号	HUT57377(A)	申请公布日期	1991.11.28
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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