Patent search ap:("SMITH CORP A O") AND inv:"HAROLD LUND" Page 1

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发明授权
Method of preparing galvanized parts for welding 失效
Title translation: 焊接用镀锌件的方法

公开(公告)号：US2716690A

公开(公告)日：1955-08-30

申请号：US17273250

申请日：1950-07-08

Applicant: SMITH CORP A O

Inventor： HAROLD LUND

IPC: B23K13/00 , H05B6/36

CPC classification number: B23K13/00 , H05B6/362

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