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公开(公告)号：US1748577A
公开(公告)日：1930-02-25
申请号：US30442128
申请日：1928-09-07
Applicant: AMERICAN WELDING COMPANY
Inventor： MERRIAM HENRY P
IPC: B21D51/24
CPC classification number: B21D51/24 , Y10S220/29 , Y10T29/49927
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公开(公告)号：US1748576A
公开(公告)日：1930-02-25
申请号：US29986128
申请日：1928-08-15
Applicant: AMERICAN WELDING COMPANY
Inventor： MERRIAM HENRY P
IPC: B21D51/24
CPC classification number: B21D51/24 , Y10S29/035 , Y10S29/048 , Y10S220/29
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