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发明名称
Improvements in or relating to multi-frequency generators
摘要
申请公布号
GB708388(A)
申请公布日期
1954.05.05
申请号
GB19520008318
申请日期
1952.04.01
申请人
AUTOMATIC ELECTRIC LABORATORIES, INC.
发明人
分类号
H04J1/06;H04L5/02
主分类号
H04J1/06
代理机构
代理人
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