Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12425785 | Personal communication device | Ralph T. Campagna | 2025-09-23 |
| 12120488 | Personal sound amplification article and method for implementing same | Ralph T. Campagna | 2024-10-15 |
| 11350225 | Personal sound amplification article and method for implementing same | Ralph T. Campagna | 2022-05-31 |