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发明名称
Einrichtung zur Hochfrequenz-Nachrichtenübermittlung im Gegensprechverkehr.
摘要
申请公布号
CH139609(A)
申请公布日期
1930.04.30
申请号
CHD139609
申请日期
1929.05.08
申请人
C. LORENZ AKTIENGESELLSCHAFT
发明人
AKTIENGESELLSCHAFT C. LORENZ
分类号
主分类号
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代理人
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地址
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