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发明名称
摘要
申请公布号
JPS5634942(U)
申请公布日期
1981.04.04
申请号
JP19790117314U
申请日期
1979.08.24
申请人
发明人
分类号
E04F21/165;(IPC1-7):E04F21/165
主分类号
E04F21/165
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