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发明名称
TELEPHONE CIRCUIT FOR SUPPLYING RINGING SIGNALS TO A SUBSCRIBER TELEPHONE LINE AND FOR DETECTING UNHOOKING
摘要
申请公布号
EP0267808(A3)
申请公布日期
1989.08.30
申请号
EP19870310074
申请日期
1987.11.13
申请人
SGS MICROELETTRONICA SPA;SAT SOCIETE ANONYME DE TELECOMMUNICATIONS
发明人
SILIGONI, MARCO;SAVIOTTI, VANNI;LAVOISARD, JEAN-LOUIS
分类号
H04M3/02;H04M19/02;(IPC1-7):H04M19/02
主分类号
H04M3/02
代理机构
代理人
主权项
地址
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