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发明名称
摘要
申请公布号
JPH03128881(U)
申请公布日期
1991.12.25
申请号
JP19900038381U
申请日期
1990.04.10
申请人
发明人
分类号
G04B19/14;(IPC1-7):G04B19/14
主分类号
G04B19/14
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代理人
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地址
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