Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6949133 | Portable oxygen concentrator | Norman R. McCombs, Robert Casey, Michael A. Chimiak | 2005-09-27 |
| 6764534 | Portable oxygen concentrator | Norman R. McCombs, Robert Casey, Michael A. Chimiak | 2004-07-20 |