Invention Grant
- Patent Title: Alternating current welding apparatus
- Patent Title (中): 交流焊接设备
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Application No.: US49762730Application Date: 1930-11-24
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Publication No.: US2092003APublication Date: 1937-09-07
- Inventor: MITCHELL COURTNEY N
- Applicant: MITCHELL COURTNEY N
- Assignee: Courtney N Mitchell
- Current Assignee: Courtney N Mitchell
- Priority: US49762730 1930-11-24
- Main IPC: B23K11/24
- IPC: B23K11/24
Information query
