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发明名称
Intercommunicating telephone systems
摘要
申请公布号
US3089000(A)
申请公布日期
1963.05.07
申请号
US19600041357
申请日期
1960.07.07
申请人
AUTOMATIC ELECTRIC LABORATORIES, INC.
发明人
BURGENER KARL L.
分类号
H04Q3/62
主分类号
H04Q3/62
代理机构
代理人
主权项
地址
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