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发明名称
Telecommunication systems
摘要
申请公布号
US2758156(A)
申请公布日期
1956.08.07
申请号
US19510251897
申请日期
1951.10.18
申请人
RICHARD MERCER
发明人
MERCER RICHARD
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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