Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D1030112 | Portable light | David J. Friedman, Sarah Elizabeth Friedman, Ronald Graczyk, Eric A. Haddad | 2024-06-04 |
| 11957503 | Electronic stethoscope with accessories | David J. Friedman, Sarah Elizabeth Friedman, Ronald Graczyk | 2024-04-16 |
| 11026654 | Electronic stethoscope with accessories | David J. Friedman, Sarah Elizabeth Friedman, Ronald Graczyk | 2021-06-08 |