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发明名称
Anordnung zur Umkehrung der UEbertragungsrichtung in Synchron-Telegraphenanlagen
摘要
申请公布号
DE525499(C)
申请公布日期
1931.05.23
申请号
DE1929E038577D
申请日期
1929.01.09
申请人
ELECTRICAL RESEARCH PRODUCTS, INC.
发明人
分类号
H04L5/18
主分类号
H04L5/18
代理机构
代理人
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地址
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