Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4798240 | Integrated space heating, air conditioning and potable water heating appliance | Joseph Gerstmann, Wayne S. Hill | 1989-01-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4798240 | Integrated space heating, air conditioning and potable water heating appliance | Joseph Gerstmann, Wayne S. Hill | 1989-01-17 |