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发明名称
Tonfrequenz-Rundsteuerverfahren und statischer Tonfrequenz-Rundsteuer-Empfänger zur Durchführung des Verfahrens
摘要
申请公布号
CH516245(A)
申请公布日期
1971.11.30
申请号
CH19690014686
申请日期
1969.09.29
申请人
IFRA AG
发明人
EHRENTRAUT,PETER
分类号
H02J13/00;(IPC1-7):H02J13/00
主分类号
H02J13/00
代理机构
代理人
主权项
地址
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