AUTOMATIC EARTH-MOVING TYPE EARTH DRILL,申请号JP19870287274-传众专利搜索

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发明名称	AUTOMATIC EARTH-MOVING TYPE EARTH DRILL
摘要
申请公布号	JPH01131783(A)	申请公布日期	1989.05.24
申请号	JP19870287274	申请日期	1987.11.16
申请人	HITACHI CONSTR MACH CO LTD	发明人	IIDA TAKEO
分类号	E21B11/00	主分类号	E21B11/00
代理机构		代理人
主权项
地址

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