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发明名称
Schaltungsanordnung fuer Fernsprechanlagen mit einer Vermittlungsstelle mit Umwegverkehr
摘要
申请公布号
DE1001724(B)
申请公布日期
1957.01.31
申请号
DE1955A022594
申请日期
1955.05.02
申请人
AUTOMATIC ELECTRIC LABORATORIES, INC.
发明人
MOLNAR IMRE
分类号
H04M7/06;H04Q3/00
主分类号
H04M7/06
代理机构
代理人
主权项
地址
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