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发明名称
摘要
申请公布号
JPH0277205(U)
申请公布日期
1990.06.13
申请号
JP19880156417U
申请日期
1988.11.30
申请人
发明人
分类号
E21D11/40;E04B1/48;(IPC1-7):E04B1/48
主分类号
E21D11/40
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代理人
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