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发明名称
Modulation of static frequency changer current
摘要
申请公布号
US1778724(A)
申请公布日期
1930.10.21
申请号
US19250072633
申请日期
1925.12.02
申请人
GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE M. B. H.
发明人
OSNOS MENDEL
分类号
H03C1/10
主分类号
H03C1/10
代理机构
代理人
主权项
地址
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