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经营范围
发明名称
Rectifier tube
摘要
申请公布号
US2248425(A)
申请公布日期
1941.07.08
申请号
US19390255113
申请日期
1939.02.07
申请人
DORSEY JOHN W
发明人
DORSEY JOHN W.
分类号
H01J5/06
主分类号
H01J5/06
代理机构
代理人
主权项
地址
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