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发明名称
SCHALTUNGSANORDNUNG FUER FERNMELDE-, INSBESONDERE FERNSPRECHVERMITTLUNGSANLAGEN, MIT MEHRSTUFIGEN KOPPELFELDERN
摘要
申请公布号
DE1487900(B2)
申请公布日期
1972.11.09
申请号
DE19661487900
申请日期
1966.07.27
申请人
发明人
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
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