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发明名称
Tracking mechanism for reflex velocity modulated tubes
摘要
申请公布号
US2515203(A)
申请公布日期
1950.07.18
申请号
US19460641856
申请日期
1946.01.17
申请人
ERNST EDWARD W
发明人
ERNST EDWARD W.
分类号
H01J25/24
主分类号
H01J25/24
代理机构
代理人
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