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发明名称
SCHALTUNGSANORDNUNG ZUR ECHOUNTERDRUECKUNG IN EINEM SPRECH KREIS AUF EINEM VIERDRAHT UEBERTRAGUNGSSYSTEM BEI EINEM UEBERGANG AUF EINEN ZWEIDRAHTUEBERTRAGUNGSWEG
摘要
申请公布号
DE1816153(B2)
申请公布日期
1971.04.15
申请号
DE19681816153
申请日期
1968.12.20
申请人
发明人
分类号
H04B3/23;H04B3/20;(IPC1-7):H04B3/20
主分类号
H04B3/23
代理机构
代理人
主权项
地址
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