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发明名称
Converter for electric currents
摘要
申请公布号
US1809110(A)
申请公布日期
1931.06.09
申请号
US19290385836
申请日期
1929.08.14
申请人
CRAGG JOHN H;CRAGG KENNETH B
发明人
CRAGG JOHN H.;CRAGG KENNETH B.
分类号
H02M1/22
主分类号
H02M1/22
代理机构
代理人
主权项
地址
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