Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880157 | Capacity control for integrated furnace | Chester D. Ripka, Ian M. Shapiro | 1989-11-14 |
| 4738394 | Integral liquid-backed gas-fired space heating and hot water system | Chester D. Ripka, Ian M. Shapiro | 1988-04-19 |