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经营范围
发明名称
Vacuum discharge tube
摘要
申请公布号
US2128236(A)
申请公布日期
1938.08.30
申请号
US19350045331
申请日期
1935.10.16
申请人
N. V. MACHINERIEEN-EN APPARATEN FABRIEKEN "MEAF"
发明人
DALLENBACH WALTER
分类号
H01J19/02;H01J25/54;H01J25/70;H03H7/24
主分类号
H01J19/02
代理机构
代理人
主权项
地址
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