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公开(公告)号：US2984768A
公开(公告)日：1961-05-16
申请号：US51252655
申请日：1955-06-01
Applicant: ILLINOIS TOOL WORKS
Inventor： HENRY ROBERT L
CPC classification number: H05K1/141 , A01K1/0613 , H05K1/144 , H05K1/182 , H05K3/3405 , H05K3/3447 , H05K3/368 , H05K2201/049 , H05K2201/09072 , H05K2201/09181 , H05K2201/10325 , H05K2201/10651
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