Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11123816 | Aluminum alloy to steel welding process | David R. Sigler, James G. Schroth, Blair E. Carlson, David Yang | 2021-09-21 |
| 10981243 | Multi-step direct welding of an aluminum-based workpiece to a steel workpiece | David R. Sigler, Blair E. Carlson, Michael J. Karagoulis | 2021-04-20 |