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经营范围
发明名称
High frequency oscillator tube
摘要
申请公布号
US2128231(A)
申请公布日期
1938.08.30
申请号
US19340747948
申请日期
1934.10.11
申请人
N. V. MACHINERIEEN-EN APPARATEN FABRIEKEN "MEAF"
发明人
DALLENBACH WALTER
分类号
H01J25/70
主分类号
H01J25/70
代理机构
代理人
主权项
地址
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