UPWARD EXCAVATING METHOD FOR SHAFT,申请号JP19910144937-传众专利搜索

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发明名称	UPWARD EXCAVATING METHOD FOR SHAFT
摘要
申请公布号	JPH04368595(A)	申请公布日期	1992.12.21
申请号	JP19910144937	申请日期	1991.06.17
申请人	MITSUI CONSTR CO LTD	发明人	TAMURA TOMIO;YAMAJI HIROSHI
分类号	E21D3/00	主分类号	E21D3/00
代理机构		代理人
主权项
地址

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