U.S. Elevator
Records under this name other than patents U.S. Elevator holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Showing 1 to 5 of 5 · Back to U.S. Elevator
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 4,286,583 | Solar heater unit Term ended Term ended no later than Sep 1, 2001 · Low confidence | Term ended | Term ended no later than Sep 1, 2001 | Low confidence |
| US 4,750,592 | Elevator position reading sensor system Term ended Term ended no later than Jun 14, 2008 · Low confidence | Term ended | Term ended no later than Jun 14, 2008 | Low confidence |
| US 4,805,739 | Elevator control switch and position indicator assembly Term ended Term ended no later than Feb 21, 2009 · Low confidence | Term ended | Term ended no later than Feb 21, 2009 | Low confidence |
| US 4,951,787 | Elevator control and indicator device Term ended Term ended no later than Aug 28, 2010 · Low confidence | Term ended | Term ended no later than Aug 28, 2010 | Low confidence |
| US 5,501,299 | Process and apparatus for preventing corrosion of a hydraulic elevator cylinder Term ended Term ended no later than Mar 26, 2016 · Low confidence | Term ended | Term ended no later than Mar 26, 2016 | Low confidence |