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公开(公告)号：US3041255A
公开(公告)日：1962-06-26
申请号：US1665460
申请日：1960-03-22
Applicant: METAL & THERMIT CORP
Inventor： FRANK PASSAL , HARTMAN JOHN A
IPC: C25D3/18
CPC classification number: C25D3/18
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