Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5012597 | Shoe sole with twist flex feature | — | 1991-05-07 |
| 4899284 | Wing lift/drag optimizing system | George E. Lewis, David W. Nelson | 1990-02-06 |
| 4890398 | Shoe sole | — | 1990-01-02 |