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发明名称
Electrical apparatus for computing a check symbol
摘要
申请公布号
US2776091(A)
申请公布日期
1957.01.01
申请号
US19510231540
申请日期
1951.06.14
申请人
COMPAGNIE DES MACHINES BULL
发明人
CHENUS PIERRE JACQUES CHARLES
分类号
G06F7/42;G06F11/10
主分类号
G06F7/42
代理机构
代理人
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