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发明名称
Pulse frequency monitor
摘要
申请公布号
US2553594(A)
申请公布日期
1951.05.22
申请号
US19490078882
申请日期
1949.02.28
申请人
LICHTMAN SAMUEL W;MAZUR DANIEL G
发明人
LICHTMAN SAMUEL W.;MAZUR DANIEL G.
分类号
H04J3/06;H04J3/16
主分类号
H04J3/06
代理机构
代理人
主权项
地址
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