Lighting Systems, Inc.
Records under this name other than the patents Lighting Systems, Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned. None of them is counted in the 1 patents it holds.
Back to Lighting Systems, Inc.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 4,023,067 | Inverter ballast circuit Term ended Term ended no later than May 10, 1997 · Low confidence | Term ended | Term ended no later than May 10, 1997 | Low confidence |
| US 4,181,928 | Portable spot/flood light Formerly held Term ended Term ended no later than Jan 1, 2000 · Low confidence | Term ended | Term ended no later than Jan 1, 2000 | Low confidence |
| US 4,218,637 | Flasher circuit Term ended Term ended no later than Aug 19, 2000 · Low confidence | Term ended | Term ended no later than Aug 19, 2000 | Low confidence |
| US 4,233,655 | Spotlight Term ended Term ended no later than Nov 11, 2000 · Low confidence | Term ended | Term ended no later than Nov 11, 2000 | Low confidence |
| US 4,309,745 | Reflector Formerly held Term ended Term ended no later than Jan 5, 2002 · Low confidence | Term ended | Term ended no later than Jan 5, 2002 | Low confidence |
| US 4,383,145 | Matrix switch Formerly held Term ended Term ended no later than May 10, 2003 · Low confidence | Term ended | Term ended no later than May 10, 2003 | Low confidence |
| US 4,424,468 | Inverter ballast circuit with shoot through prevention, auto transformer coupling and overload prevention Formerly held Term ended Term ended no later than Jan 3, 2004 · Low confidence | Term ended | Term ended no later than Jan 3, 2004 | Low confidence |
| US 4,459,516 | Line operated fluorescent lamp inverter ballast Formerly held Term ended Term ended no later than Jul 10, 2004 · Low confidence | Term ended | Term ended no later than Jul 10, 2004 | Low confidence |
| US 4,512,098 | Sign frame and method for factory installing flexible sign facing material thereon Formerly held Term ended Term ended no later than Apr 23, 2005 · Low confidence | Term ended | Term ended no later than Apr 23, 2005 | Low confidence |
| US 4,605,993 | Recharging spot/flood lantern Formerly held Term ended Term ended no later than Aug 12, 2006 · Low confidence | Term ended | Term ended no later than Aug 12, 2006 | Low confidence |