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发明名称
DEVICE FOR USER SWITCHING TO A TRUNK LINE
摘要
申请公布号
SU1663613(A2)
申请公布日期
1991.07.15
申请号
SU19894708546
申请日期
1989.06.21
申请人
PERMSKOE N-PROIZV OB "PARMA"
发明人
POPOV VLADIMIR N,SU;KISELEV VIKTOR I,SU;KAYUSHEV EVGENIJ V,SU;RACHEV SERGEJ N,SU
分类号
G06F13/00
主分类号
G06F13/00
代理机构
代理人
主权项
地址
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