Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7592911 | Construction hard hat having electronic circuitry | John McDermott | 2009-09-22 |
| 7298258 | Construction hard hat having electronic circuitry | John McDermott | 2007-11-20 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7592911 | Construction hard hat having electronic circuitry | John McDermott | 2009-09-22 |
| 7298258 | Construction hard hat having electronic circuitry | John McDermott | 2007-11-20 |