Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5031068 | Liquid level control system for refrigeration apparatus | Charles C. Hansen, III, John A. Yencho, William J. Barbier, Orval Kuhn | 1991-07-09 |
| 4809129 | Liquid level control system for refrigeration apparatus | Charles C. Hansen, III, John A. Yencho, William J. Barbier, Orval Kuhn | 1989-02-28 |