Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6647783 | Vent plug for environmentally controlled housing for gas monitoring system | Frank Wewers | 2003-11-18 |
| 5879631 | Gas detection system and method | Frank Wewers, Kevin EuDaly | 1999-03-09 |