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发明名称
Frequency change indicator
摘要
申请公布号
US2566222(A)
申请公布日期
1951.08.28
申请号
US19470779369
申请日期
1947.10.11
申请人
THE BRUSH DEVELOPMENT COMPANY
发明人
LYNCH THOMAS E.
分类号
H04N5/04
主分类号
H04N5/04
代理机构
代理人
主权项
地址
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