Issued Patents All Time
Showing 76–78 of 78 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4456456 | Hot-water heating system having an air eliminator | — | 1984-06-26 |
| 4343182 | Radiation heat loss detector | — | 1982-08-10 |
| 4222350 | Efficient heating and domestic hot water apparatus | Joseph Gerstmann | 1980-09-16 |