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发明名称
摘要
申请公布号
JPS52156215(U)
申请公布日期
1977.11.28
申请号
JP19760065525U
申请日期
1976.05.21
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发明人
分类号
E04D1/12;(IPC1-7):E04D1/12
主分类号
E04D1/12
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