Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE45093 | Submerged entry nozzle with installable parts | Robert C. Hanna | 2014-08-26 |
| 8616264 | Submerged entry nozzle with installable parts | Robert C. Hanna | 2013-12-31 |
| 7363959 | Submerged entry nozzle with installable parts | Robert C. Hanna | 2008-04-29 |