Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4261418 | Outdoor coil unit for heat pump | Robert W. Helt | 1981-04-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4261418 | Outdoor coil unit for heat pump | Robert W. Helt | 1981-04-14 |