Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4971217 | Tensioned floatation cover with slip ring connection | William L. Robertson, Geoffrey C. Agassiz | 1990-11-20 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4971217 | Tensioned floatation cover with slip ring connection | William L. Robertson, Geoffrey C. Agassiz | 1990-11-20 |