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发明名称
Selective mode transducer
摘要
申请公布号
US2682610(A)
申请公布日期
1954.06.29
申请号
US19510260137
申请日期
1951.12.06
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
KING ARCHIE P.
分类号
H01P1/161
主分类号
H01P1/161
代理机构
代理人
主权项
地址
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