Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10729200 | Protective helmets having energy absorbing tethers | Dean L. Sicking, Blake A. Feltman | 2020-08-04 |
| 5261957 | Phosphogypsum composition having improved expansion properties | Willis Thornsberry | 1993-11-16 |