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公开(公告)号：US3218193A
公开(公告)日：1965-11-16
申请号：US13926561
申请日：1961-09-19
Applicant: LEESONA CORP
Inventor： CALVIN ISAACSON
CPC classification number: B23K3/082 , B23K35/0222 , H05K3/3489 , Y10T29/49224
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