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发明名称
Schaltungsanordnung fuer Fernsprechanlagen mit Waehlerbetrieb
摘要
申请公布号
DE704359(C)
申请公布日期
1941.03.28
申请号
DE1938S132778D
申请日期
1938.07.01
申请人
SIEMENS & HALSKE AKT.-GES.
发明人
SOBOTTA DIPL.-ING. KURT;TOEPFER HERBERT
分类号
H04M7/06;H04Q3/42
主分类号
H04M7/06
代理机构
代理人
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