Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9221006 | Oxygen concentrator having structural sieve beds | William M. Chambers, Thomas Sprinkle | 2015-12-29 |
| 8562725 | Oxygen concentrator having structural sieve beds | William M. Chambers, Thomas Sprinkle | 2013-10-22 |
| 8282717 | Oxygen concentrator having structural sieve beds | William M. Chambers, Thomas Sprinkle | 2012-10-09 |
| 7875105 | Oxygen concentrator having structural sieve beds | William M. Chambers, Thomas Sprinkle | 2011-01-25 |