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发明名称
Schaltungsanordnung für Schalteinrichtungen mit mehreren örtlichen Sprechwegen, insbesondere für Nebenstellenanlagen
摘要
申请公布号
AT190555(B)
申请公布日期
1957.07.10
申请号
ATD190555
申请日期
1955.11.11
申请人
SIEMENS SOCIETA PER AZIONI
发明人
分类号
主分类号
代理机构
代理人
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