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法人/股东/高管

发明名称
摘要
申请公布号	JPS6245391(B2)	申请公布日期	1987.09.26
申请号	JP19810169441	申请日期	1981.10.24
申请人	HITACHI CONSTRUCTION MACHINERY	发明人	KUSUMI HIROSHI
分类号	E21B15/00	主分类号	E21B15/00
代理机构		代理人
主权项
地址

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