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发明名称
Improvements in or relating to tuning devices for a cavity resonator electron discharge tube
摘要
申请公布号
GB619667(A)
申请公布日期
1949.03.14
申请号
GB19440000216
申请日期
1944.01.05
申请人
SPERRY GYROSCOPE COMPANY INC.
发明人
分类号
H01J25/24
主分类号
H01J25/24
代理机构
代理人
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