Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5053623 | Photometric analyzer for differential total reduced sulfur measurement by comparison with sample gas | Gerald F. McGowan, Allan Budd | 1991-10-01 |
| 5028790 | Apparatus for full-system zero check and window soiling measurement and correction for transmissometers | Gerald F. McGowan | 1991-07-02 |
| 4974455 | Dilution extractive probe | Gerald F. McGowan | 1990-12-04 |
| 4560873 | Situ multi-channel combustion gas analyzer | Gerald F. McGowan, Gerald W. Price, Carl E. Polhemus | 1985-12-24 |