DRILLING DEVICE AND DRILLING METHOD FOR CONTINUOUS HOLE,申请号JP19940197240-传众专利搜索

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发明名称	DRILLING DEVICE AND DRILLING METHOD FOR CONTINUOUS HOLE
摘要
申请公布号	JPH0842279(A)	申请公布日期	1996.02.13
申请号	JP19940197240	申请日期	1994.07.28
申请人	TOHO KINZOKU KK;OKUMURA CORP;FURUKAWA CO LTD	发明人	AKIYOSHI NAOYOSHI;KUNITAKE SEIJI;INOUE TAKASHI;MASUMOTO TADASHI;MURAKAMI SUSUMU;EBARA YOSHIO
分类号	E21B19/24;E21C25/58;E21C37/00;(IPC1-7):E21C9/00	主分类号	E21B19/24
代理机构		代理人
主权项
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