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发明名称
摘要
申请公布号	JPH0751286(Y2)	申请公布日期	1995.11.22
申请号	JP19930073737U	申请日期	1993.12.24
申请人		发明人
分类号	E21B10/02;B23B51/04;B28D1/14;G10K11/16;(IPC1-7):B28D1/14	主分类号	E21B10/02
代理机构		代理人
主权项
地址

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