Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6454834 | Regenerable air cleaning device | David E. Livingstone, Michael R. Harms | 2002-09-24 |
| 6394090 | Flat-folded personal respiratory protection devices and processes for preparing same | Dana W. Nouri | 2002-05-28 |