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发明名称
Schaltungsanordnung für Gesellschaftsleitungen bei selbsttätigen oder halbselbsttätigen Fernsprechanlagen.
摘要
申请公布号
AT122407(B)
申请公布日期
1931.04.25
申请号
ATD122407
申请日期
1930.02.07
申请人
VEREINIGTE TELEPHON- UND TELEGRAPHENFABRIKS-AKTIEN-GESELLSCHAFT CZEIJA, NISSL & CO.
发明人
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主分类号
代理机构
代理人
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