,申请号JP19880165571U-传众专利搜索

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发明名称
摘要
申请公布号	JPH0640711(Y2)	申请公布日期	1994.10.26
申请号	JP19880165571U	申请日期	1988.12.21
申请人		发明人
分类号	E21B10/36;E21B3/02;E21B49/02;G01N1/04;G01N1/08;(IPC1-7):E21B49/02	主分类号	E21B10/36
代理机构		代理人
主权项
地址

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