Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6700097 | Electric ARC welder and controller to design the waveform therefor | Christopher Hsu | 2004-03-02 |
| 6683278 | Tandem electrode welder and method of welding with two electrodes | Elliott K. Stava | 2004-01-27 |