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发明名称
Frequency changer
摘要
申请公布号
US2023245(A)
申请公布日期
1935.12.03
申请号
US19330662209
申请日期
1933.03.23
申请人
FAIRBANKS, MORSE & COMPANY
发明人
SCHOU THEODOR
分类号
H02K47/18
主分类号
H02K47/18
代理机构
代理人
主权项
地址
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