Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872249 | Tool support and guide system for repair of boiler tube panels and process for carrying out repair using same | Jerald VanderPol, William H. Astle | 1989-10-10 |
| 4802278 | Gear driven tube cutter | Jerald VanderPol, Neil Pfafman | 1989-02-07 |