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发明名称
Drehschalter zur Umschaltung zwischen den Betriebsroehren und mehreren Ersatzroehren eines schwer zugaenglichen Verstaerkers
摘要
申请公布号
DE759546(C)
申请公布日期
1953.03.02
申请号
DE1940S139801D
申请日期
1940.01.14
申请人
SIEMENS & HALSKE A. G.
发明人
BAUER RUDOLF DR.-ING.
分类号
F21V19/04;H03F1/54;H04B1/74
主分类号
F21V19/04
代理机构
代理人
主权项
地址
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