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经营范围
发明名称
KEYBOARD DEVICE
摘要
申请公布号
JPH0423023(A)
申请公布日期
1992.01.27
申请号
JP19900127542
申请日期
1990.05.17
申请人
NEC CORP
发明人
ITAYA SHU
分类号
G06F3/02
主分类号
G06F3/02
代理机构
代理人
主权项
地址
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