,申请号JP19990080955-传众专利搜索

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发明名称
摘要
申请公布号	JP3258974(B2)	申请公布日期	2002.02.18
申请号	JP19990080955	申请日期	1999.03.25
申请人		发明人
分类号	E21B7/00;E21B4/14;(IPC1-7):E21B7/00	主分类号	E21B7/00
代理机构		代理人
主权项
地址

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