Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851951 | Non-defeatable safety mechanical actuators for appliances | — | 1989-07-25 |
| 4827104 | Phototransistor relay electronic temperature control for cordless irons | — | 1989-05-02 |
| 4823225 | Bipolar immersion detection circuit interrupter | Donald J. Kempiak | 1989-04-18 |
| 4811159 | Ionizer | — | 1989-03-07 |