Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5594974 | Releasable caster | Walter E. Lisowski | 1997-01-21 |
| 5347681 | Releasable fifth wheel caster for skateboards | Walter E. Lisowski | 1994-09-20 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5594974 | Releasable caster | Walter E. Lisowski | 1997-01-21 |
| 5347681 | Releasable fifth wheel caster for skateboards | Walter E. Lisowski | 1994-09-20 |