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发明名称
Electric coupling systems for thermionic valve circuits
摘要
申请公布号
GB371697(A)
申请公布日期
1932.04.28
申请号
GB19310020251
申请日期
1931.07.14
申请人
HAZELTINE CORPORATION
发明人
分类号
H03H7/01;H03J3/06
主分类号
H03H7/01
代理机构
代理人
主权项
地址
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