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发明名称
Transposition device
摘要
申请公布号
US1761046(A)
申请公布日期
1930.06.03
申请号
US19270177205
申请日期
1927.03.21
申请人
RADIO CORPORATION
发明人
PFAUTZ CHRISTIAN E.
分类号
H01B17/16
主分类号
H01B17/16
代理机构
代理人
主权项
地址
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