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发明名称
摘要
申请公布号
JPH04109392(U)
申请公布日期
1992.09.22
申请号
JP19910010950U
申请日期
1991.03.04
申请人
发明人
分类号
G04B27/02;(IPC1-7):G04B27/02
主分类号
G04B27/02
代理机构
代理人
主权项
地址
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