Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876498 | Two wire low voltage dimmer | Charles C. Houng | 1989-10-24 |
| 4833339 | Load control system | Stephen J. Yuhasz, Ian R. Hurst, Joel S. Spira | 1989-05-23 |
| 4803380 | Cover and support plate arrangement for wall mounted devices | Elliot G. Jacoby, Michael J. D'Aleo, Joel S. Spira, Richard A. Wagner, Stephen J. Yuhasz +1 more | 1989-02-07 |