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公开(公告)号：US3479026A
公开(公告)日：1969-11-18
申请号：US3479026D
申请日：1968-03-26
Applicant: IBM
Inventor： PLUMMER WILLIAM B , HONERT TACO H VAN DEN , WILSON MELVIN G
IPC: G06K13/067 , H03K17/965 , B65H9/20
CPC classification number: H03K17/965 , G06K13/067
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