,申请号JP19870170731U-传众专利搜索

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发明名称
摘要
申请公布号	JPH061662(Y2)	申请公布日期	1994.01.12
申请号	JP19870170731U	申请日期	1987.11.10
申请人		发明人
分类号	E02D7/22;E02D13/00;E21B19/00;(IPC1-7):E21B19/00	主分类号	E02D7/22
代理机构		代理人
主权项
地址

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