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发明名称
Telephone system
摘要
申请公布号
US2285282(A)
申请公布日期
1942.06.02
申请号
US19400365850
申请日期
1940.11.16
申请人
ASSOCIATED ELECTRIC LABORATORIES, INC.
发明人
JONES ROY W.
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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