Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877944 | Self regulating heater | Mark J. Cowell, Kevin C. Ladd | 1989-10-31 |
| 4814587 | High power self-regulating heater | — | 1989-03-21 |
| 4795886 | Temperature control in which the control parameter is the degree of imperfection in the impedance matching | — | 1989-01-03 |