Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6651658 | Portable oxygen concentration system and method of using the same | Theodore B. Hill, Robert Schneider, James A. Bixby | 2003-11-25 |
| 6629525 | Portable oxygen concentration system and method of using the same | Theodore B. Hill, Robert Schneider, James A. Bixby | 2003-10-07 |