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发明名称
Anordnung zur Verstaerkung modulierter Hochfrequenztraegerschwingungen
摘要
申请公布号
DE507647(C)
申请公布日期
1930.09.18
申请号
DE1929G077007D
申请日期
1929.07.18
申请人
THE GRAMOPHONE COMPANY LIMITED
发明人
分类号
H03H7/01
主分类号
H03H7/01
代理机构
代理人
主权项
地址
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