Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11089832 | Helmet impact attenuation article | Leonard P. Frieder, Jr., George D. Hedges, Christopher Barmore | 2021-08-17 |
| D922692 | Helmet pad | Duco W. Noordzij | 2021-06-15 |
| 10893718 | Individually conforming impact attenuating liner for a helmet | Matthew Hanudel, Duco W. Noordzij | 2021-01-19 |