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发明名称
Schaltung fuer Fernsprechanlagen mit Haupt- und Untervermittlungsstellen
摘要
申请公布号
DE649270(C)
申请公布日期
1937.08.19
申请号
DE1933L083345D
申请日期
1933.03.11
申请人
C. LORENZ AKT.-GES.
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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