Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE34781 | Coupling adapter | Steven M. Knowles, John T. Kosztowny | 1994-11-08 |
| 4921013 | Coupling adapter | Steven M. Knowles, John T. Kosztowny | 1990-05-01 |
| 4892117 | Refrigeration coupling | Steven M. Knowles, John T. Kusztowny | 1990-01-09 |