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发明名称
Telephone extension system with a central control unit
摘要
申请公布号
CH655217(A5)
申请公布日期
1986.03.27
申请号
CH19810003326
申请日期
1981.05.21
申请人
SIEMENS AKTIENGESELLSCHAFT BERLIN UND MUENCHEN
发明人
OTT, GERHARD;HONOLD, HORST;KELLERMANN, WILHELM;SOERENSEN, EGON
分类号
H04Q3/545;(IPC1-7):H04Q3/54
主分类号
H04Q3/545
代理机构
代理人
主权项
地址
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