EXCAVATING HEAD FOR BORING,申请号JP19900105927-传众专利搜索

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发明名称	EXCAVATING HEAD FOR BORING
摘要
申请公布号	JPH045389(A)	申请公布日期	1992.01.09
申请号	JP19900105927	申请日期	1990.04.21
申请人	SHIGEMORI TOMOTAKE	发明人	SHIGEMORI TOMOTAKE
分类号	E21B10/02;E21B17/14	主分类号	E21B10/02
代理机构		代理人
主权项
地址

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