Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5715808 | Direct vent fireplace | — | 1998-02-10 |
| 5471973 | Direct vent fireplace | — | 1995-12-05 |
| 4480630 | Jacketed combustion type heater with blowback prevention feature | — | 1984-11-06 |
| 4424934 | Hot water heating system | — | 1984-01-10 |
| 4320739 | Combustion type heater | — | 1982-03-23 |
| 4292954 | Wood burning heater | — | 1981-10-06 |