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发明名称
摘要
申请公布号	JPH0411861(U)	申请公布日期	1992.01.30
申请号	JP19900053104U	申请日期	1990.05.23
申请人		发明人
分类号	E21D11/10;E04G21/02;(IPC1-7):E04G21/02	主分类号	E21D11/10
代理机构		代理人
主权项
地址

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