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公开(公告)号：US2841077A
公开(公告)日：1958-07-01
申请号：US39671653
申请日：1953-12-07
Applicant: IBM
Inventor： JOHNSON REYNOLD B , WOLFF FRED G
IPC: B41J2/24
CPC classification number: B41J2/24 , Y10T74/20402
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