Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5121849 | Nuclear waste storage canister and cover therefor | Frederick J. Ellingson | 1992-06-16 |
| 5114666 | Cask basket construction for heat-producing radioactive material | Frederick J. Ellingson | 1992-05-19 |