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发明名称
Schaltungsanordnung fuer Wechselsprech-Lautsprechanlagen mit Konferenzbetrieb
摘要
申请公布号
DE920370(C)
申请公布日期
1954.12.06
申请号
DE1950M002328
申请日期
1950.03.15
申请人
STANDARD ELEKTRIZITAETS-GESELLSCHAFT AKTIENGESELLSCHAFT
发明人
RENSCH HEINZ DIPL.-ING.
分类号
H04M9/00
主分类号
H04M9/00
代理机构
代理人
主权项
地址
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