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发明名称
Telephone Exchange System with Automatic Operation over a Carrier-Frequency Section
摘要
申请公布号
GB1179781(A)
申请公布日期
1970.01.28
申请号
GB19670005342
申请日期
1967.02.03
申请人
TELEFUNKEN PATENTVERWERTUNGS-GESELLSCHAFT M.B.H.
发明人
分类号
H04M7/16
主分类号
H04M7/16
代理机构
代理人
主权项
地址
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