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发明名称
摘要
申请公布号
JPS5255312(Y2)
申请公布日期
1977.12.14
申请号
JP19740061606U
申请日期
1974.06.05
申请人
发明人
分类号
E04F15/14;E04B1/68;E04F13/06;(IPC1-7):E04F13/06
主分类号
E04F15/14
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代理人
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