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经营范围
发明名称
Electronic calculator with lens
摘要
申请公布号
GB2222280(A)
申请公布日期
1990.02.28
申请号
GB19880018270
申请日期
1988.08.01
申请人
* LEONA ELECTRONICS CO LTD
发明人
WAI-KWAN * HO
分类号
G02B25/02;G06F15/02;G06K19/04
主分类号
G02B25/02
代理机构
代理人
主权项
地址
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