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发明名称
Verfahren und Einrichtung zur verschlüsselten Fernansteuerung eines automatischen Telephonographen über eine Telephonleitung.
摘要
申请公布号
CH259612(A)
申请公布日期
1949.01.31
申请号
CHD259612
申请日期
1947.03.07
申请人
DAPHNE INVESTMENT TRUST (REG. TRUST)
发明人
TRUST) DAPHNE INVESTMENT TRUST (REG.
分类号
H04M1/652
主分类号
H04M1/652
代理机构
代理人
主权项
地址
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