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发明名称
摘要
申请公布号
JPH01146192(U)
申请公布日期
1989.10.09
申请号
JP19880043422U
申请日期
1988.03.31
申请人
发明人
分类号
G04G13/02;(IPC1-7):G04G13/02
主分类号
G04G13/02
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代理人
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