Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6200367 | Water washable stainless steel HEPA filter | — | 2001-03-13 |
| 6023981 | Sampling box | Craig R. Johnson | 2000-02-15 |
| 5977547 | Filter for on-line air monitor unaffected by radon progeny and method of using same | Howard D. Edwards | 1999-11-02 |
| 5271032 | Lid heater for glass melter | — | 1993-12-14 |