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发明名称
Calculating appliance
摘要
申请公布号
US2764822(A)
申请公布日期
1956.10.02
申请号
US19540465321
申请日期
1954.10.28
申请人
NINA GUREVITCH
发明人
GUREVITCH MORRIS
分类号
G06C1/00
主分类号
G06C1/00
代理机构
代理人
主权项
地址
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