INNER EXCAVATION DEVICE OF CASING ROTARY EXCAVATOR,申请号JP19960021521-传众专利搜索

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发明名称	INNER EXCAVATION DEVICE OF CASING ROTARY EXCAVATOR
摘要
申请公布号	JPH09209675(A)	申请公布日期	1997.08.12
申请号	JP19960021521	申请日期	1996.02.07
申请人	N S TECHNO:KK	发明人	NOMURA TAKENORI;TSUTSUMI KIMIE
分类号	E21B4/18;(IPC1-7):E21B4/18	主分类号	E21B4/18
代理机构		代理人
主权项
地址

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