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发明名称
DEVICE FOR DELIVERING CALL VOLTAGE TO TELEPHONE APPARATUS
摘要
申请公布号
SU1566516(A1)
申请公布日期
1990.05.23
申请号
SU19847773388
申请日期
1984.05.07
申请人
DSO RESPROM (INOPREDPRIYATIE)
发明人
STOEV ILIYA GEORGIEV,BG;IVANOV EMIL MANOLOV,BG;LAZAROV BORIS MIRCHEV,BG
分类号
H04Q1/30
主分类号
H04Q1/30
代理机构
代理人
主权项
地址
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