|
| US4907139 | 31 mar 1988 | 6 mar 1990 | Hubbell Incorporated | Photocontrol device for grade mounted light fixture |
| US4931914 | 23 mar 1989 | 5 jun 1990 | Hubbell Incorporated | Ballast and optical housings for grade mounted light fixture |
| US4931915 | 23 mar 1989 | 5 jun 1990 | Hubbell Incorporated | Sealing system for grade mounted light fixture |
| US4947307 | 23 mar 1989 | 7 aug 1990 | Hubbell Incorporated | Adjustable recessed louvers for grade mounted light fixture |
