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公开(公告)号：US2389969A
公开(公告)日：1945-11-27
申请号：US51194843
申请日：1943-11-27
Applicant: FADELEY GILBERT M
Inventor： FADELEY GILBERT M
IPC: B23K9/28
CPC classification number: B23K9/28 , Y10S29/081
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