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申请公布号
JPS55172538(U)
申请公布日期
1980.12.11
申请号
JP19790072443U
申请日期
1979.05.31
申请人
发明人
分类号
E04F13/04;(IPC1-7):E04F13/04
主分类号
E04F13/04
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