Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D846217 | Squeegee sponge | James Gavney | 2019-04-16 |
| 5742131 | Dimmable ballast control circuit | James C. Sprout | 1998-04-21 |
| D380452 | Wall-mounted switch | Charles Hu | 1997-07-01 |
| 5598042 | Moveable desktop load controller | Charles Hu, James M. Young | 1997-01-28 |
| 5455487 | Moveable desktop light controller | Charles Hu, James C. Sprout | 1995-10-03 |
| 5406173 | Apparatus and method for adjusting lights according to the level of ambient light | Charles Hu, James C. Sprout, Kenneth A. McCuen | 1995-04-11 |
| 4820938 | Low voltage motion sensor for activating a high voltage load | Charles Hu | 1989-04-11 |
| D294231 | Occupancy sensor | Maclyn C. Cameron, Jr., Charles Hu | 1988-02-16 |
| 4661720 | Occupancy sensor | Maclyn C. Cameron, Jr., Charles Hu | 1987-04-28 |