Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5150661 | Retractable steering device for cargo barges that increases maneuverability by providing a pivot point or points when altering course | — | 1992-09-29 |
| 4928613 | Retractable steering device for cargo barges that increases maneuverability by providing a pivot point or points when altering course | — | 1990-05-29 |