发明名称 MAGNETIC LEDGER DEVICE
摘要 PURPOSE:To realize the reference, memory transfer and postscript for the ledger as in the case of the paper-type ledger, by forming the ledger through data recording on the magnetic card and then by displaying the magnetic card to the character display unit electrically.
申请公布号 JPS52133741(A) 申请公布日期 1977.11.09
申请号 JP19760049937 申请日期 1976.05.04
申请人 HITACHI LTD 发明人 MARUYAMA RIYOUICHI
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