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发明名称
Reading device controlled by magnetic record cards
摘要
申请公布号
US2781972(A)
申请公布日期
1957.02.19
申请号
US19520286407
申请日期
1952.05.06
申请人
COMPAGNIE DES MACHINES BULL
发明人
CHAIMOWICZ ADAM
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主分类号
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