Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886288 | Device and method to safely elevate stabilize and lower a wheel chair | — | 1989-12-12 |
| 4874269 | Semi submersible device and method of transporting a marine superstructure and placing it onto or removing it from a marine structure | — | 1989-10-17 |
| 4829924 | Semi submersible device and method to set and salvage marine superstructures | — | 1989-05-16 |