UNDERGROUND DRILLING METHOD,申请号JP19930228231-传众专利搜索

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发明名称	UNDERGROUND DRILLING METHOD
摘要
申请公布号	JPH0754577(A)	申请公布日期	1995.02.28
申请号	JP19930228231	申请日期	1993.08.19
申请人	AKASHI SEMISHIIRUDO KENSETSU KK	发明人	AKASHI HIROAKI
分类号	E21D9/06;(IPC1-7):E21D9/06	主分类号	E21D9/06
代理机构		代理人
主权项
地址

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