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发明名称
Wechselsprechanlage mit mehreren gleichberechtigten Stationen und einer gemeinsamen Zentrale
摘要
申请公布号
DE1026363(B)
申请公布日期
1958.03.20
申请号
DE1955R016414
申请日期
1955.04.06
申请人
ANTONIO DA RIVA
发明人
RIVA ANTONIO DA
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主分类号
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