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发明名称
DEVICE FOR DISPLAYING THE STATE OF SWITCHING CHANNELS OF COMMUNICATION CENTRE
摘要
申请公布号
SU756662(A1)
申请公布日期
1980.08.15
申请号
SU19782571697
申请日期
1978.01.18
申请人
MARTYNENKO VALERIJ V,SU
发明人
MARTYNENKO VALERIJ V,SU
分类号
H04M3/22;(IPC1-7):H04M3/22
主分类号
H04M3/22
代理机构
代理人
主权项
地址
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