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发明名称
TELEPHONE STATION WITH AUTOMATIC SWITCHOVER BETWEEN PULSE CODE DIALLING AND MULTIFREGUENCY CODE DIALLING
摘要
申请公布号
GB2016869(A)
申请公布日期
1979.09.26
申请号
GB19790008174
申请日期
1979.03.08
申请人
ROCHE B
发明人
分类号
H04M1/26;H04M1/30;H04M1/31;(IPC1-7):H04M1/27
主分类号
H04M1/26
代理机构
代理人
主权项
地址
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