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发明名称
摘要
申请公布号
JPS55155356(U)
申请公布日期
1980.11.08
申请号
JP19790056417U
申请日期
1979.04.25
申请人
发明人
分类号
G04C3/00;G04G99/00;G06F15/02;(IPC1-7):G06F15/02
主分类号
G04C3/00
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