METHOD FOR EXCAVATING VERTICAL SHAFT BY PREBORING,申请号JP19930083216-传众专利搜索

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发明名称	METHOD FOR EXCAVATING VERTICAL SHAFT BY PREBORING
摘要
申请公布号	JPH06294274(A)	申请公布日期	1994.10.21
申请号	JP19930083216	申请日期	1993.04.09
申请人	KAJIMA CORP	发明人	YAMADA KENJI
分类号	E21D1/00;F42D1/00;(IPC1-7):E21D1/00	主分类号	E21D1/00
代理机构		代理人
主权项
地址

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