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经营范围
发明名称
Improvements in or relating to electric signalling over power lines
摘要
申请公布号
GB535147(A)
申请公布日期
1941.03.31
申请号
GB19400001378
申请日期
1940.01.23
申请人
THE GENERAL ELECTRIC COMPANY LIMITED;EDGAR PHILIP LAWRENCE WESTELL;JOHN FARNSWORTH;CHARLES OLLERENSHAW
发明人
分类号
H04B3/54;H04J1/04
主分类号
H04B3/54
代理机构
代理人
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地址
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