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发明名称
Electronic switching device
摘要
申请公布号
US2579001(A)
申请公布日期
1951.12.18
申请号
US19470750487
申请日期
1947.05.26
申请人
JEFFERS CHARLES L
发明人
JEFFERS CHARLES L.
分类号
H04B7/08
主分类号
H04B7/08
代理机构
代理人
主权项
地址
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