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发明名称
Frequency modulation system for electric signalling
摘要
申请公布号
GB606780(A)
申请公布日期
1948.08.19
申请号
GB19460001828
申请日期
1946.01.18
申请人
STANDARD TELEPHONES AND CABLES LIMITED
发明人
分类号
H03K7/06
主分类号
H03K7/06
代理机构
代理人
主权项
地址
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