Issued Patents 2017
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9737956 | Resistance spot welding thin gauge steels | David Yang, David R. Sigler | 2017-08-22 |
| 9682439 | Welding electrode with contoured face | David R. Sigler | 2017-06-20 |
| 9676065 | Resistance spot welding of aluminum to aluminum and steel to steel | David R. Sigler | 2017-06-13 |