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发明名称
摘要
申请公布号
JPS525453(Y2)
申请公布日期
1977.02.04
申请号
JP19710044412U
申请日期
1971.05.27
申请人
发明人
分类号
E04B2/56;E04B2/60;E04B2/74;E04B2/78;(IPC1-7):E04B2/78;E04B1/40
主分类号
E04B2/56
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代理人
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