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发明名称
摘要
申请公布号
JPH0197279(U)
申请公布日期
1989.06.28
申请号
JP19870139069U
申请日期
1987.09.11
申请人
发明人
分类号
G04B23/02;G04B27/00;G04B27/08;(IPC1-7):G04B23/02
主分类号
G04B23/02
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代理人
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