Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11787155 | Reinforced rigid insulation | Charles G. Sproule, III | 2023-10-17 |
| 11123956 | Reinforced rigid insulation | Charles G. Sproule, III | 2021-09-21 |
| 9943712 | Communication and speech enhancement system | John C. Hamilton, Christopher McDivit | 2018-04-17 |