Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12098872 | Method and apparatus for staged startup of air-cooled low charged packaged ammonia refrigeration system | Donald Lee Hamilton, Samuel K. Vineyard, II | 2024-09-24 |
| 11674723 | Method and apparatus for staged startup of air-cooled low charged packaged ammonia refrigeration system | Donald Lee Hamilton, Samuel K. Vineyard, II | 2023-06-13 |
| 11156392 | Method and apparatus for staged startup of air-cooled low charged packaged ammonia refrigeration system | Donald Lee Hamilton, Samuel K. Vineyard, II | 2021-10-26 |