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发明名称
Einrichtung zur Dämpfungsregelung bei Trägerfrequenz-Übertragungssystemen
摘要
申请公布号
AT179321(B)
申请公布日期
1954.08.10
申请号
ATD179321
申请日期
1953.03.17
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
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主分类号
代理机构
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