Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843234 | Consumable electrode length monitor based on optical time domain reflectometry | John W. Berthold | 1989-06-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843234 | Consumable electrode length monitor based on optical time domain reflectometry | John W. Berthold | 1989-06-27 |