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发明名称
Pilot device for the frequency keying of signals transmitted by an operating teletypewriter
摘要
申请公布号
US2929874(A)
申请公布日期
1960.03.22
申请号
US19560583830
申请日期
1956.05.09
申请人
SOC. METALLOTECNICA
发明人
CUPELLA ALDO
分类号
H04L27/12
主分类号
H04L27/12
代理机构
代理人
主权项
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