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发明名称
摘要
申请公布号
JPS5931075(U)
申请公布日期
1984.02.27
申请号
JP19820194148U
申请日期
1982.12.23
申请人
发明人
分类号
G04B19/04;G04B19/30;(IPC1-7):G04B19/30
主分类号
G04B19/04
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代理人
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