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公开(公告)号：DE2960963D1
公开(公告)日：1981-12-24
申请号：DE2960963
申请日：1979-03-09
Applicant: IBM
Inventor： WILSON CLEMENT CARD , VAN CLEAVE GEORGE WILLIAM , ERNST LARRY MASON , SEIGAL STEVEN DAVID , CHAMPION JAMES ROBERT
IPC: G03G15/00
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