Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D379650 | Electric space heater for mounting on a ceiling or wall | Michael T. Kopczewski | 1997-06-03 |
| 5621846 | Radiant electric space heater with angular adjustment support bracket | Michael T. Kopczewski | 1997-04-15 |