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经营范围
发明名称
Improvements in or relating to automatic telephone answering systems
摘要
申请公布号
GB782384(A)
申请公布日期
1957.09.04
申请号
GB19560005845
申请日期
1956.02.24
申请人
WESTERN ELECTRIC COMPANY
发明人
分类号
H04M1/64
主分类号
H04M1/64
代理机构
代理人
主权项
地址
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