Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5280559 | Electrical storage heater | — | 1994-01-18 |
| D308418 | Housing for an electric storage heater | — | 1990-06-05 |
| D306757 | Electric storage heater | — | 1990-03-20 |
| D306342 | Electric storage heater | — | 1990-02-27 |
| 4894516 | Electrical storage heaters | Gordon W. Ellis | 1990-01-16 |
| 4557379 | Circuit board package and method of manufacture | Kurt Rozek | 1985-12-10 |
| 4345639 | Heat storage units | — | 1982-08-24 |