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公开(公告)号:US2819419A
公开(公告)日:1958-01-07
申请号:US42507254
申请日:1954-04-23
Applicant: IBM
Inventor: LANO JR RALPH B DE , LITTLE JOHN B , STUTZ FREDERICK L
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公开(公告)号:US2902629A
公开(公告)日:1959-09-01
申请号:US47035354
申请日:1954-11-22
Applicant: IBM
Inventor: LITTLE JOHN B , PHELPS BYRON E
CPC classification number: H05K3/3447 , H05K3/3468 , H05K3/4046 , H05K2201/10265 , H05K2201/10287 , H05K2201/10295 , H05K2201/10765 , H05K2201/10916 , Y10T403/4318 , Y10T403/4327 , Y10T403/4372
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