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发明名称
Dial signal generator for generating dial pulse signal and dual tone multi-frequency signal
摘要
申请公布号
EP0346243(B1)
申请公布日期
1996.09.11
申请号
EP19890401616
申请日期
1989.06.09
申请人
FUJITSU LIMITED
发明人
HASEGAWA, TAKASHI
分类号
H04M1/26;H04M1/30;H04M1/50;(IPC1-7):H04M1/50;H03M7/22
主分类号
H04M1/26
代理机构
代理人
主权项
地址
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