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发明名称
Electrically operated selector
摘要
申请公布号
US2888665(A)
申请公布日期
1959.05.26
申请号
US19540467520
申请日期
1954.11.08
申请人
HARDT FOUNDATION;SABIN C. BROUSON
发明人
HAGGADONE L. V.
分类号
H04L17/30
主分类号
H04L17/30
代理机构
代理人
主权项
地址
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