Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7752772 | Article of footwear having a fluid-filled chamber with flexion zones | Tobie D. Hatfield | 2010-07-13 |
| 7555851 | Article of footwear having a fluid-filled chamber with flexion zones | John F. Swigart, Tobie D. Hatfield | 2009-07-07 |
| 7451554 | Fluid system having an expandable pump chamber | Frederick J. Dojan | 2008-11-18 |
| 7409779 | Fluid system having multiple pump chambers | Frederick J. Dojan | 2008-08-12 |