Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5365219 | Conversation level warning device | Michael Chang, Robert S. Lee | 1994-11-15 |
| 5319540 | System and method for controlling a periodically actuated ventilation flow system | Fernando Jose Isaza | 1994-06-07 |