Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4314542 | Infra-red domestic furnace | — | 1982-02-09 |
| 4252520 | Infra-red domestic furnace | — | 1981-02-24 |
| 4189297 | Matrix mounting means for gas burners | Werner H. Zwipf | 1980-02-19 |