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经营范围
发明名称
Electric valve converting system and excitation apparatus therefor
摘要
申请公布号
US1971833(A)
申请公布日期
1934.08.28
申请号
US19330678643
申请日期
1933.07.01
申请人
GENERAL ELECTRIC COMPANY
发明人
PHILLIPI EARL L.
分类号
H02M1/04
主分类号
H02M1/04
代理机构
代理人
主权项
地址
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