,申请号JP19970020315-传众专利搜索

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发明名称
摘要
申请公布号	JP3770987(B2)	申请公布日期	2006.04.26
申请号	JP19970020315	申请日期	1997.02.03
申请人		发明人
分类号	E21B21/02;E02D3/12;F16L27/08	主分类号	E21B21/02
代理机构		代理人
主权项
地址

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