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摘要
申请公布号
JPS55139484(U)
申请公布日期
1980.10.04
申请号
JP19790039679U
申请日期
1979.03.26
申请人
发明人
分类号
G04G5/00;G04G15/00;G04G21/00;G04G99/00
主分类号
G04G5/00
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