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发明名称
摘要
申请公布号
JPH01107993(U)
申请公布日期
1989.07.20
申请号
JP19880003356U
申请日期
1988.01.13
申请人
发明人
分类号
G04G21/00;G04G5/00;G04G99/00;(IPC1-7):G04G5/00;G04G1/00
主分类号
G04G21/00
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