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发明名称
Electric rectifier control grid
摘要
申请公布号
US1908949(A)
申请公布日期
1933.05.16
申请号
US19310537832
申请日期
1931.05.16
申请人
AKTIENGESELLSCHAFT BROWN BOVERI & COMPAGNIE
发明人
BOVERI WILLI;LEUTHOLD ARMIN
分类号
H01J13/20
主分类号
H01J13/20
代理机构
代理人
主权项
地址
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