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公开(公告)号：DE3060502D1
公开(公告)日：1982-07-22
申请号：DE3060502
申请日：1980-07-10
Applicant: IBM
Inventor： ARMITAGE JR JOHN DENTON , ROUTT JR WILSON MORGAN
IPC: G03G15/041 , G03G15/052
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