Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876436 | PTC air heater employing triangular PTC heating elements | Mason Ide, Noel L. W. Lawrence | 1989-10-24 |
| 4841127 | Dual temperature hair curler utilizing a pair of PTC heaters | Douglas C. Carbone | 1989-06-20 |
| 4822980 | PTC heater device | Douglas C. Carbone | 1989-04-18 |
| 4823064 | Quick reset motor starting device | Douglas C. Carbone | 1989-04-18 |
| 4797534 | PTC thermistor heating device | Mason Ide | 1989-01-10 |