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发明名称
摘要
申请公布号
JPH0755237(Y2)
申请公布日期
1995.12.20
申请号
JP19890102217U
申请日期
1989.08.31
申请人
发明人
分类号
E04G21/32;(IPC1-7):E04G21/32
主分类号
E04G21/32
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