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发明名称
APPARATUS FOR CONNECTING FOUR-WIRE COMMUNICATION CHANNELS INTO GRUOP CONNECTION
摘要
申请公布号
SU1345374(A1)
申请公布日期
1987.10.15
申请号
SU19864010655
申请日期
1986.01.22
申请人
GALKIN EVGENIJ B,SU
发明人
GALKIN EVGENIJ B,SU
分类号
H04M3/56
主分类号
H04M3/56
代理机构
代理人
主权项
地址
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