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发明名称
摘要
申请公布号
JPS634733(Y2)
申请公布日期
1988.02.08
申请号
JP19810072361U
申请日期
1981.05.18
申请人
发明人
分类号
E04C3/32;E04B1/58;E04F13/073;E04F13/08;(IPC1-7):E04C3/32
主分类号
E04C3/32
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