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发明名称
Polarity reverser
摘要
申请公布号
US2568801(A)
申请公布日期
1951.09.25
申请号
US19470782551
申请日期
1947.10.28
申请人
CINEMA-TELEVISION LIMITED
发明人
GRAHAM GEORGE E. G.
分类号
H03K5/00
主分类号
H03K5/00
代理机构
代理人
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