Invention Grant
- Patent Title: Apparatus and method for indicating defective welds
- Patent Title (中): 指示有缺陷焊缝的装置和方法
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Application No.: US68983433Application Date: 1933-09-18
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Publication No.: US1979786APublication Date: 1934-11-06
- Inventor: ANDRUS ORRIN E
- Applicant: SMITH CORP A O
- Assignee: A O Smith Corp
- Current Assignee: A O Smith Corp
- Priority: US68983433 1933-09-18
- Main IPC: B23K11/25
- IPC: B23K11/25
Information query
