,申请号JP19980108080-传众专利搜索

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发明名称
摘要
申请公布号	JP3820314(B2)	申请公布日期	2006.09.13
申请号	JP19980108080	申请日期	1998.04.17
申请人		发明人
分类号	E21B7/20;E21B11/04	主分类号	E21B7/20
代理机构		代理人
主权项
地址

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