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发明名称
Keying filter
摘要
申请公布号
US2304164(A)
申请公布日期
1942.12.08
申请号
US19390285691
申请日期
1939.07.21
申请人
RADIO CORPORATION
发明人
HANSELL CLARENCE W.
分类号
H04B1/16
主分类号
H04B1/16
代理机构
代理人
主权项
地址
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