Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6934971 | Football helmet | Thad M. Ide, Ralph Infusino, Nelson Kraemer, Christopher R. P. Withnall | 2005-08-30 |
| 6871525 | Method and apparatus for testing football helmets | Christopher R. P. Withnall | 2005-03-29 |