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经营范围
发明名称
Circuit for producing a loop interruption of defined duration for telephone subscriber sets
摘要
申请公布号
CH656278(A5)
申请公布日期
1986.06.13
申请号
CH19820003400
申请日期
1982.06.03
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
MINGAUD, ANDRE;GONDOUIN, MICHEL
分类号
H04M1/53;(IPC1-7):H04M3/58;H04M1/50;H04Q1/45
主分类号
H04M1/53
代理机构
代理人
主权项
地址
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