Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840112 | Combined valve/cylinder using electro-rheological fluid | Richard L. Creedon, C. Ross Harder | 1989-06-20 |
| 4802560 | Combined wheel/brake apparatus using electro-rheological fluid | Richard L. Creedon, C. Ross Harder | 1989-02-07 |