Issued Patents 2016
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9440305 | Method of resistance spot welding aluminum alloy workpieces | David R. Sigler | 2016-09-13 |
| 9346118 | Forming and re-forming welding electrodes with contoured faces | David R. Sigler | 2016-05-24 |