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发明名称
Intercommunicating telephone system
摘要
申请公布号
US2053798(A)
申请公布日期
1936.09.08
申请号
US19340727218
申请日期
1934.05.24
申请人
ASSOCIATED ELECTRIC LABORATORIES, INC.
发明人
LOMAX CLARENCE E.
分类号
H04M5/10
主分类号
H04M5/10
代理机构
代理人
主权项
地址
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