Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6809286 | Shielding gas filter for welding apparatus | Gerald Peter Piechowski | 2004-10-26 |
| 6781095 | Method and apparatus for welding with a trigger hold | L. Thomas Hayes, Kenneth C. Altekruse | 2004-08-24 |