Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10642251 | Subtractive machining work center | David E. Platts | 2020-05-05 |
| 5894839 | Anesthesia tube assembly | Robert D. Richmond, Richard B. Hartnett | 1999-04-20 |
| 5722391 | Anesthesia tube assembly | Robert D. Richmond, Richard B. Hartnett | 1998-03-03 |
| 5590644 | Heat and moisture exchanger for breathing | — | 1997-01-07 |