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发明名称
EMERGENCY ANNUNCIATION SYSTEM USING ISDN TERMINAL EQUIPMENT
摘要
申请公布号
JPH02226951(A)
申请公布日期
1990.09.10
申请号
JP19890047821
申请日期
1989.02.28
申请人
NEC CORP
发明人
SUZUKI MICHINARI
分类号
G08B23/00;G08B25/00;G08B25/08;H04M1/26;H04M1/2745;H04M1/275;H04M11/04
主分类号
G08B23/00
代理机构
代理人
主权项
地址
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