BORING DEVICE,申请号JP19890140063-传众专利搜索

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发明名称	BORING DEVICE
摘要
申请公布号	JPH035589(A)	申请公布日期	1991.01.11
申请号	JP19890140063	申请日期	1989.05.31
申请人	TAKENAKA KOMUTEN CO LTD	发明人	NAKANO TATSUO;FUJII MASATSUGU
分类号	E21B10/32;E21B7/28;E21B7/30;E21B10/44	主分类号	E21B10/32
代理机构		代理人
主权项
地址

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