LONG-SIZED DRILLING DEVICE,申请号JP19950301323-传众专利搜索

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发明名称	LONG-SIZED DRILLING DEVICE
摘要
申请公布号	JPH09144470(A)	申请公布日期	1997.06.03
申请号	JP19950301323	申请日期	1995.11.20
申请人	RAITO KOGYO CO LTD	发明人	HAYASHI MASAMI
分类号	E02D17/20;E21B7/02;E21B15/00;E21B19/08;(IPC1-7):E21C11/00	主分类号	E02D17/20
代理机构		代理人
主权项
地址

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