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经营范围
发明名称
DTMF RECEIVER
摘要
申请公布号
JPH05328414(A)
申请公布日期
1993.12.10
申请号
JP19920152770
申请日期
1992.05.20
申请人
NEC CORP
发明人
MATSUSHIMA FUMIHIRO
分类号
H04M11/00;H04Q1/45;(IPC1-7):H04Q1/45
主分类号
H04M11/00
代理机构
代理人
主权项
地址
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