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经营范围
发明名称
ALARM CLOCK
摘要
申请公布号
JPH02310491(A)
申请公布日期
1990.12.26
申请号
JP19890133604
申请日期
1989.05.26
申请人
NEC ENG LTD
发明人
OKAWA SADAO
分类号
G04C21/02
主分类号
G04C21/02
代理机构
代理人
主权项
地址
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