Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D303657 | Transmitter for wireless light dimmer system | Joel S. Spira, Raphael K. T. Tang | 1989-09-26 |
| D303658 | Transmitter for wireless light dimmer system | Joel S. Spira, Raphael K. T. Tang | 1989-09-26 |
| D302543 | Transmitter for wireless light switching system | Joel S. Spira, Raphael K. T. Tang | 1989-08-01 |
| 4833277 | Wall plate insert | Elliot G. Jacoby, Joel S. Spira | 1989-05-23 |
| 4825075 | Non-electronic gain control | Elliot G. Jacoby, Stephen J. Yuhasz | 1989-04-25 |