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发明名称
DISPOSITIF POUR L'ETABLISSEMENT DE COMMUNICATIONS COLLECTIVES DANS UNE INSTALLATION DE TELECOMMUNICATIONS, EN PARTICULIER DANS UN CENTRAL TELEPHONIQUE, A MODULATIONS PAR IMPULSIONS CODEES
摘要
申请公布号
BE773329(A1)
申请公布日期
1972.03.30
申请号
BE19710773329
申请日期
1971.09.30
申请人
SIEMENS A.G., A BERLIN ET A MUNICH, (ALLEMAGNE),
发明人
分类号
H04M3/56;(IPC1-7):H04M/
主分类号
H04M3/56
代理机构
代理人
主权项
地址
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