HYDRAULIC EARTH DRILL,申请号JP19840118228-传众专利搜索

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发明名称	HYDRAULIC EARTH DRILL
摘要
申请公布号	JPS60261886(A)	申请公布日期	1985.12.25
申请号	JP19840118228	申请日期	1984.06.11
申请人	HITACHI KENKI KK	发明人	IKUTA MASAHARU
分类号	E21B11/00;E21B7/02	主分类号	E21B11/00
代理机构		代理人
主权项
地址

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