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发明名称
摘要
申请公布号
JPS5932984(U)
申请公布日期
1984.02.29
申请号
JP19820128319U
申请日期
1982.08.24
申请人
发明人
分类号
G04B37/14;G04B37/20;(IPC1-7):G04B37/20
主分类号
G04B37/14
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