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发明名称
OPTICAL LOOP TRANSMISSION SYSTEM
摘要
申请公布号
JPS5784637(U)
申请公布日期
1982.05.25
申请号
JP19800161581U
申请日期
1980.11.12
申请人
发明人
分类号
H01H33/53;H01H33/02;(IPC1-7):H01H33/02
主分类号
H01H33/53
代理机构
代理人
主权项
地址
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