Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D287242 | Face plate for lighting control | Zalman A. Liss, Joel S. Spira | 1986-12-16 |
| D285066 | Face plate for lighting control | Zalman A. Liss, Joel S. Spira | 1986-08-12 |
| 4563592 | Wall box dimmer switch with plural remote control switches | Stephen J. Yuhasz | 1986-01-07 |
| 4558262 | Load switching arrangement for gas discharge lamp circuit | John E. Longenderfer, Dennis Capewell | 1985-12-10 |
| 4540917 | Pulse network for fluorescent lamp dimming | Jonathan H. Ference | 1985-09-10 |
| 4527099 | Control circuit for gas discharge lamps | Dennis Capewell, Joel S. Spira | 1985-07-02 |
| 4449074 | Excess light turn-off circuit | — | 1984-05-15 |
| 4350935 | Gas discharge lamp control | Joel S. Spira, Dennis Capewell | 1982-09-21 |
| 4236101 | Light control system | — | 1980-11-25 |
| 4210846 | Inverter circuit for energizing and dimming gas discharge lamps | Dennis Capewell, Joel S. Spira | 1980-07-01 |
| 4207497 | Ballast structure for central high frequency dimming apparatus | Dennis Capewell, Joel S. Spira | 1980-06-10 |
| 4207498 | System for energizing and dimming gas discharge lamps | Joel S. Spira, Dennis Capewell | 1980-06-10 |
| 4195599 | Speed sensitive electronic fuel control system for an internal combustion engine | — | 1980-04-01 |