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发明名称
Telephone set
摘要
申请公布号
US2193536(A)
申请公布日期
1940.03.12
申请号
US19370145466
申请日期
1937.05.29
申请人
RADIO CORPORATION OF AMERICA
发明人
JR. ALEXANDER MURDOCH,
分类号
H04M1/04
主分类号
H04M1/04
代理机构
代理人
主权项
地址
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