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发明名称
摘要
申请公布号
JPS57178634(U)
申请公布日期
1982.11.12
申请号
JP19810065556U
申请日期
1981.05.08
申请人
发明人
分类号
E04F13/21;E04F13/08;(IPC1-7):E04F13/08
主分类号
E04F13/21
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代理人
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