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经营范围
发明名称
Improvements in or relating to electric circuits comprising thermionic valves with indirectly heated cathodes
摘要
申请公布号
GB458879(A)
申请公布日期
1936.12.29
申请号
GB19350030223
申请日期
1935.11.01
申请人
THE GENERAL ELECTRIC COMPANY LIMITED;GEORGE WILLIAM EDWARDS;DENNIS CLARK ESPLEY
发明人
分类号
H04N5/08
主分类号
H04N5/08
代理机构
代理人
主权项
地址
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