GROUND EXCAVATING BIT,申请号JP19970043806-传众专利搜索

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发明名称	GROUND EXCAVATING BIT
摘要
申请公布号	JPH10238267(A)	申请公布日期	1998.09.08
申请号	JP19970043806	申请日期	1997.02.27
申请人	NIPPON KISO GIJUTSU:KK	发明人	TSUKADA MOTOHARU
分类号	E21B10/46;(IPC1-7):E21B10/46	主分类号	E21B10/46
代理机构		代理人
主权项
地址

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