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发明名称
摘要
申请公布号
JPS52168312(U)
申请公布日期
1977.12.20
申请号
JP19760078305U
申请日期
1976.06.15
申请人
发明人
分类号
E04D13/158;E04D13/072;E04D13/15;(IPC1-7):E04D13/06
主分类号
E04D13/158
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代理人
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