Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6460752 | Method of friction stir welding with grooved backing member | Douglas J. Waldron | 2002-10-08 |
| 6367681 | Friction stir welding apparatus and method | Douglas J. Waldron | 2002-04-09 |