Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5112667 | Impact resistant helmet | D. C. Prevorsek | 1992-05-12 |
| 4953234 | Impact resistant helmet | D. C. Prevorsek | 1990-09-04 |
| 4883700 | Composite and article using short length fibers at oblique angles | G. A. Harpell, Y. D. Kwon, D. C. Prevorsek | 1989-11-28 |
| 4820568 | Composite and article using short length fibers | Gary A. Harpell, Y. D. Kwon, D. C. Prevorsek | 1989-04-11 |