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发明名称
DEVICE FOR SIGNAL CONVERSION IN TELEPHONE EXCHANGES
摘要
申请公布号
BG97090(A)
申请公布日期
1994.05.27
申请号
BG19920097090D
申请日期
1992.11.17
申请人
KHRISTOV, STOJCHO J.;BAKALOV, KHRISTO S.;IVANOV, IVAN V.
发明人
KHRISTOV, STOJCHO J.;BAKALOV, KHRISTO S.;IVANOV, IVAN V.
分类号
H04M15/04;(IPC1-7):H04M15/04
主分类号
H04M15/04
代理机构
代理人
主权项
地址
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