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发明名称
Calculatrice à transistors
摘要
申请公布号
FR1152538(A)
申请公布日期
1958.02.19
申请号
FRD1152538
申请日期
1955.06.23
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
分类号
G06F7/491;G06F7/52
主分类号
G06F7/491
代理机构
代理人
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地址
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