Issued Patents 2017
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9664424 | Cascade refrigeration system with modular ammonia chiller units | John D. Bittner, Shitong Zha, Joe T. Wilkerson, Jr. | 2017-05-30 |
| 9657977 | Cascade refrigeration system with modular ammonia chiller units | John D. Bittner, Shitong Zha, Joe T. Wilkerson, Jr. | 2017-05-23 |
| 9541311 | Cascade refrigeration system with modular ammonia chiller units | John D. Bittner, Shitong Zha, Joseph R. Poland | 2017-01-10 |