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发明名称
Reading apparatus
摘要
申请公布号
US2971693(A)
申请公布日期
1961.02.14
申请号
US19570677349
申请日期
1957.08.09
申请人
THE NATIONAL CASH REGISTER COMPANY
发明人
DOBBERSTEIN ERVIN C.;BENNETT JOHN W.;PRESTON WILLIAM C.;SANDOR LOUIS K.
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