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发明名称
摘要
申请公布号
JPS6450513(U)
申请公布日期
1989.03.29
申请号
JP19870146913U
申请日期
1987.09.26
申请人
发明人
分类号
E04B1/70;E04C2/30;E04F13/14;(IPC1-7):E04C2/30
主分类号
E04B1/70
代理机构
代理人
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