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发明名称
摘要
申请公布号
JPS5828229(Y2)
申请公布日期
1983.06.20
申请号
JP19820051147U
申请日期
1982.04.08
申请人
发明人
分类号
G04B19/25;(IPC1-7):G04B19/25
主分类号
G04B19/25
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代理人
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