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发明名称
Tubes à ondes progressives
摘要
申请公布号
FR1222297(A)
申请公布日期
1960.06.09
申请号
FR19590793119
申请日期
1959.04.24
申请人
THE M-O VALVE COMPANY LIMITED
发明人
分类号
H01J23/083;H01J25/40
主分类号
H01J23/083
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代理人
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