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公开(公告)号：US3037265A
公开(公告)日：1962-06-05
申请号：US70589057
申请日：1957-12-30
Applicant: IBM
Inventor： XAVIER KOLLMEIER
CPC classification number: H05K3/041 , H05K3/005 , H05K3/3447 , H05K3/4084 , H05K2201/0355 , H05K2201/091 , H05K2201/09827 , H05K2203/0195 , H05K2203/1189 , H05K2203/1572 , Y10T29/4916 , Y10T29/49167 , Y10T29/49833
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