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发明名称
ELECTRONIC CALCULATORS
摘要
申请公布号
GB1476951(A)
申请公布日期
1977.06.16
申请号
GB19740018893
申请日期
1974.04.30
申请人
HEWLETT PACKARD CO
发明人
分类号
G04G5/04;G04F10/00;G04G5/00;G04G9/00;G04G99/00;G06F7/483;G06F7/49;G06F7/493;G06F15/02;G06F17/10;G06F17/18;(IPC1-7):G06F3/00
主分类号
G04G5/04
代理机构
代理人
主权项
地址
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