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发明名称
Improvements in and relating to thermionic valves
摘要
申请公布号
GB473498(A)
申请公布日期
1937.10.14
申请号
GB19360018118
申请日期
1936.06.30
申请人
TELEPHONE MANUFACTURING COMPANY LIMITED;LESLIE HAROLD PADDLE
发明人
分类号
H03B9/01
主分类号
H03B9/01
代理机构
代理人
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