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发明名称
Improvements in carrier wave signalling systems
摘要
申请公布号
GB513229(A)
申请公布日期
1939.10.06
申请号
GB19380010094
申请日期
1938.04.01
申请人
STANDARD TELEPHONES AND CABLES LIMITED;KENNETH GEORGE HODGSON
发明人
分类号
H04B3/10
主分类号
H04B3/10
代理机构
代理人
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地址
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