Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D326712 | Combined water heater and space heater | — | 1992-06-02 |
| 5074464 | Forced draft direct vent system for a water heater | Henry J. Moore, Jr., Wouter J. Wiersma | 1991-12-24 |