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公开(公告)号：US3541396A
公开(公告)日：1970-11-17
申请号：US3541396D
申请日：1969-01-16
Applicant: IBM
Inventor： CARDWELL WILLIAM R , JOHNSON LLOYD E , LOWRY DENIS E , O'BRIAN PAUL L , SHATTUCK DAVID C
CPC classification number: H05K7/1461
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