Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7886986 | Building, ventilation system, and recovery device control | John C. Fischer, Richard K. Mitchell | 2011-02-15 |
| 6016710 | Method and apparatus for measuring the quantity of outdoor air processed by an air preconditioning module | John C. Fischer | 2000-01-25 |