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摘要
申请公布号
CA477166(A)
申请公布日期
1951.09.25
申请号
CAD477166
申请日期
申请人
PAUL FEHR
发明人
PAUL FEHR
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主分类号
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Interference detection circuit for telecommunications system - has code tester and addressing device having constant current supplies switched via AND=gate
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