Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5493824 | Rotatably mounted skylight having reflectors | Robert H. Richardson | 1996-02-27 |
| 5194782 | Dimmer for fluorescent lamp | Robert H. Richardson | 1993-03-16 |
| 5170035 | Sensor circuit for controlling flow in an instrument loop | Robert H. Richardson | 1992-12-08 |
| 4233545 | Automatic lighting control system | Gary Woods | 1980-11-11 |