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发明名称
Improvements in or relating to thermionic valve circuits
摘要
申请公布号
GB665906(A)
申请公布日期
1952.01.30
申请号
GB19500010870
申请日期
1947.07.05
申请人
AUTOMATIC TELEPHONE & ELECTRIC COMPANY LIMITED
发明人
BAKER GEORGE THOMAS
分类号
H04Q1/32
主分类号
H04Q1/32
代理机构
代理人
主权项
地址
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