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发明名称
Einrichtung zur Erzeugung zweier Wechselstroeme von untereinander gleicher und gemeinsam veraenderlicher Frequenz und beliebig veraenderlicher gegenseitiger Phasenverschiebung
摘要
申请公布号
DE518225(C)
申请公布日期
1931.02.13
申请号
DENDATH120568D
申请日期
申请人
DR. EDMUND HAAK
发明人
分类号
H03B17/00
主分类号
H03B17/00
代理机构
代理人
主权项
地址
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