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经营范围
发明名称
DTMF SIGNAL GENERATION CIRCUIT
摘要
申请公布号
JPH0697998(A)
申请公布日期
1994.04.08
申请号
JP19920244817
申请日期
1992.09.14
申请人
FUJITSU LTD
发明人
MORI JUNZO;OTSUKI KOICHI;KOSAKA KUNIMITSU
分类号
H04M1/50;(IPC1-7):H04M1/50
主分类号
H04M1/50
代理机构
代理人
主权项
地址
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