Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4620423 | Expansion devices for a multizone heat pump system | Harold H. Hopkinson | 1986-11-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4620423 | Expansion devices for a multizone heat pump system | Harold H. Hopkinson | 1986-11-04 |