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发明名称
Doppelkoinzidenzschaltung für Fernmelde-, insbesondere Fernsprechanlagen
摘要
申请公布号
AT201129(B)
申请公布日期
1958.12.10
申请号
ATD201129
申请日期
1957.07.29
申请人
SIEMENS SOCIETA PER AZIONI
发明人
分类号
主分类号
代理机构
代理人
主权项
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