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发明名称
Transmission system
摘要
申请公布号
US2109562(A)
申请公布日期
1938.03.01
申请号
US19350000162
申请日期
1935.01.02
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
BAGNALL VERNON BARNARD
分类号
H04B1/64
主分类号
H04B1/64
代理机构
代理人
主权项
地址
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