Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4932553 | Radiation reducing manway doors | Roland M. Witt, Jr., David L. Crick, Charles M. Ashman | 1990-06-12 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4932553 | Radiation reducing manway doors | Roland M. Witt, Jr., David L. Crick, Charles M. Ashman | 1990-06-12 |