Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6466605 | Concentric electrode DC arc system and their use in processing waste materials | J. Kenneth Wittle, Richard A. Hamilton | 2002-10-15 |
| 6421500 | Concentric electrode DC arc systems and their use in processing waste materials | J. Kenneth Wittle, Richard A. Hamilton | 2002-07-16 |