Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4297147 | Method for decoking fired heater tubes | Norman Henry White, William A. Woodburn | 1981-10-27 |
| 4203778 | Method for decoking fired heater tubes | Norman Henry White, William A. Woodburn | 1980-05-20 |