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发明名称
Cathode-ray type selector switch circuit
摘要
申请公布号
US2616978(A)
申请公布日期
1952.11.04
申请号
US19490076463
申请日期
1949.02.15
申请人
HARTFORD NATIONAL BANK AND TRUST COMPANY
发明人
JONKER JOHAN LODEWIJK HENDRIK;SIX WILLEM
分类号
H04Q3/52
主分类号
H04Q3/52
代理机构
代理人
主权项
地址
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