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经营范围
发明名称
TRANSMITTING CIRCUIT FOR BUZZER
摘要
申请公布号
JPH01142700(A)
申请公布日期
1989.06.05
申请号
JP19870301960
申请日期
1987.11.30
申请人
NEC CORP;NEC TOHOKU LTD
发明人
NAKAGAWA SHUJI;IWABUCHI KATSUYA
分类号
G10K9/12
主分类号
G10K9/12
代理机构
代理人
主权项
地址
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