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发明名称
Frequency control system
摘要
申请公布号
US2790848(A)
申请公布日期
1957.04.30
申请号
US19520301921
申请日期
1952.07.31
申请人
RADIO CORPORATION
发明人
KOCH WINFIELD R.
分类号
H04N11/14
主分类号
H04N11/14
代理机构
代理人
主权项
地址
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