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发明名称
Schaltungsanordnung fuer Schleifenleitungen mit Ruhestrombetrieb
摘要
申请公布号
DE721209(C)
申请公布日期
1942.06.03
申请号
DE1929E039504D
申请日期
1929.07.04
申请人
TELEFONBAU UND NORMALZEIT LEHNER & CO.;EDUARD BLESSING
发明人
分类号
G08B29/06
主分类号
G08B29/06
代理机构
代理人
主权项
地址
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