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发明名称
BUTTON DEPRESSION INFORMATION RECOGNITION CIRCUIT FOR KEY TELEPHONE SYSTEM
摘要
申请公布号
JPH0795643(A)
申请公布日期
1995.04.07
申请号
JP19930239393
申请日期
1993.09.27
申请人
NEC ENG LTD
发明人
OTA SEIZO
分类号
H04M1/27;H04Q3/58;(IPC1-7):H04Q3/58
主分类号
H04M1/27
代理机构
代理人
主权项
地址
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