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发明名称
Tunable high-frequency electron tube structure
摘要
申请公布号
US2425738(A)
申请公布日期
1947.08.19
申请号
US19410416170
申请日期
1941.10.23
申请人
SPERRY GYROSCOPE COMPANY, INC.
发明人
HANSEN WILLIAM W.
分类号
H01J25/12;H03B19/10
主分类号
H01J25/12
代理机构
代理人
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地址
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