Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4665805 | Apparatus for counterflow air to air generative heat exchange and ventilating a room space | — | 1987-05-19 |
| 4649897 | Vaporizer-burner | — | 1987-03-17 |
| 4587401 | Electric water heating appliance | — | 1986-05-06 |
| 4493366 | Means for recovering heat from a room space, and for ventilation | — | 1985-01-15 |