Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7802443 | Total room air purification system with air conditioning, filtration and ventilation | — | 2010-09-28 |
| 7251953 | Environmental control unit for hospital room | Michael Wetzel | 2007-08-07 |
| 6117202 | Gasket seal for filter unit | — | 2000-09-12 |
| 5987908 | Self-contained air conditioner with discharge-air filter | — | 1999-11-23 |
| 5884500 | Self-contained air conditioner with discharge-air filter | — | 1999-03-23 |
| 5225167 | Room air sterilizer | — | 1993-07-06 |
| 4765810 | Testable gasket seal arrangement | — | 1988-08-23 |
| 4667580 | Clean room module | — | 1987-05-26 |
| 4519301 | Air flow balancing fire damper | — | 1985-05-28 |