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发明名称
Radio pager tone alarm circuit for generating variable duty constant audio frequency pulses modulated with unique tone pattern
摘要
申请公布号
HK1002413(A1)
申请公布日期
1998.08.21
申请号
HK19980101363
申请日期
1998.02.23
申请人
NEC CORPORATION.
发明人
KAZUYUKI TSUNODA
分类号
H04Q7/14;G08B3/10;(IPC1-7):G08B;H04Q
主分类号
H04Q7/14
代理机构
代理人
主权项
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