Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D266414 | Sheathed electric heating element | — | 1982-10-05 |
| D263734 | Metal extrusion for an electric heating element | Donald M. Cunningham, John C. Stover | 1982-04-06 |
| 4292503 | Split-band electric heater | — | 1981-09-29 |
| 4207552 | Electric heating elements | — | 1980-06-10 |