Issued Patents 2017
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9623720 | Viscous coolant heater with variable coolant pump drive | David B. Roth | 2017-04-18 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9623720 | Viscous coolant heater with variable coolant pump drive | David B. Roth | 2017-04-18 |