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发明名称
摘要
申请公布号
JPS52124014(U)
申请公布日期
1977.09.21
申请号
JP19760032840U
申请日期
1976.03.17
申请人
发明人
分类号
E04D12/00;(IPC1-7):E04D12/00
主分类号
E04D12/00
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代理人
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