Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7474063 | Anti-cycling control system for luminaires | — | 2009-01-06 |
| 7323826 | Anti-cycling control system for luminaires | — | 2008-01-29 |
| D525586 | Enclosure for luminaire control | — | 2006-07-25 |
| D348621 | Sensor housing for actuating street lamps | — | 1994-07-12 |
| 5235252 | Fiber-optic anti-cycling device for street lamps | — | 1993-08-10 |
| 5103137 | Anti-cycling device for high pressure sodium lamps | C. David Long, Arthur G. Collin | 1992-04-07 |
| 5055669 | Constant-current light-sensing system | C. David Long | 1991-10-08 |
| 5039853 | Constant-current light-sensing system and improved sensor housing | C. David Long | 1991-08-13 |
| RE33205 | Linear analog light-level monitoring system having short leads to reduce electronic noise | — | 1990-04-24 |
| 4758767 | Self-contained analog photodiode light sensing head | — | 1988-07-19 |
| RE32450 | Light-sensing, light fixture control system | — | 1987-06-30 |
| 4647763 | Linear analog light-level monitoring system | — | 1987-03-03 |
| 4587459 | Light-sensing, light fixture control system | — | 1986-05-06 |
| 4500814 | Lighting circuit control apparatus | — | 1985-02-19 |
| 4229664 | Photo electric methods and apparatus for regulating electrical power consumption in stores | Manfred K. Dittmann | 1980-10-21 |