GROUND BORING BIT,申请号JP19940218426-传众专利搜索

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发明名称	GROUND BORING BIT
摘要
申请公布号	JPH0882182(A)	申请公布日期	1996.03.26
申请号	JP19940218426	申请日期	1994.09.13
申请人	DAIYONKI CHISHITSU KENKYUSHO:KK	发明人	FURUYA YOSHIJIRO
分类号	E21B10/56;(IPC1-7):E21B10/56	主分类号	E21B10/56
代理机构		代理人
主权项
地址

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