HOLE EXCAVATOR,申请号JP19800056801-传众专利搜索

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发明名称	HOLE EXCAVATOR
摘要
申请公布号	JPS56153086(A)	申请公布日期	1981.11.26
申请号	JP19800056801	申请日期	1980.04.28
申请人	NAZUMI SATOSHI	发明人	NAZUMI SATOSHI
分类号	E21B11/02;E21B11/00	主分类号	E21B11/02
代理机构		代理人
主权项
地址

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