Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5174964 | Gas testing apparatus | Kenneth B. Barrett, Phil Hider | 1992-12-29 |
| 5122341 | Device for gas contaminant tester training | Philip A. Hider, Patricia Morin | 1992-06-16 |
| 5071768 | Method and apparatus for refrigerant testing in a closed system | — | 1991-12-10 |
| 4923806 | Method and apparatus for refrigerant testing in a closed system | — | 1990-05-08 |