,申请号JP19890055727U-传众专利搜索

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发明名称
摘要
申请公布号	JPH02146351(U)	申请公布日期	1990.12.12
申请号	JP19890055727U	申请日期	1989.05.17
申请人		发明人
分类号	E21B25/00;G01N1/08;(IPC1-7):G01N1/08	主分类号	E21B25/00
代理机构		代理人
主权项
地址

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