Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5664939 | Circulator pump check valve | Attilio G. Giordani | 1997-09-09 |
| 5622221 | Integrated zoning circulator with priority controller | Hamid Pishdadian, Michael McCarthy | 1997-04-22 |