Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6173854 | Post closure for a tank and method of retrofitting a tank with the same | Richard Donald Lyseng | 2001-01-16 |
| 6105805 | Port closure for a tank | Richard Donald Lyseng | 2000-08-22 |