,申请号JP19930056228U-传众专利搜索

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发明名称
摘要
申请公布号	JPH0725090(U)	申请公布日期	1995.05.12
申请号	JP19930056228U	申请日期	1993.10.18
申请人		发明人
分类号	E21B17/03;E21B17/02;E21B17/043;E21B19/18;(IPC1-7):E21B17/043	主分类号	E21B17/03
代理机构		代理人
主权项
地址

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