GROUND BORING METHOD AND DEVICE THEREFOR,申请号JP19910105195-传众专利搜索

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发明名称	GROUND BORING METHOD AND DEVICE THEREFOR
摘要
申请公布号	JPH04312692(A)	申请公布日期	1992.11.04
申请号	JP19910105195	申请日期	1991.04.11
申请人	OHBAYASHI CORP	发明人	TOSAKA TOMOHEI;HANIYUDA KICHIYA;TSUSHIMA SHOICHI
分类号	E21B21/14;E21B21/00	主分类号	E21B21/14
代理机构		代理人
主权项
地址

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