Cambridge Engineering, Inc.
Records under this name other than the patents Cambridge Engineering, 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 6 patents it holds.
Back to Cambridge Engineering, Inc.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,568,908 | Low Fire Start Control Term ended Term ended Dec 9, 2023 · Medium confidence | Term ended | Term ended Dec 9, 2023 | Medium confidence |
| US 9,163,856 | Hot air heater and blower assembly Lapsed on the fee record Ended Oct 20, 2023 · From the USPTO record | Lapsed on the fee record | Ended Oct 20, 2023 | From the USPTO record |
| US 6,526,964 | Direct gas-fired burner assembly Term ended Term ended May 19, 2020 · From the USPTO record | Term ended | Term ended May 19, 2020 | From the USPTO record |
| US 8,693,855 | Infra-red heater assembly Lapsed on the fee record Ended Apr 8, 2018 · High confidence | Lapsed on the fee record | Ended Apr 8, 2018 | High confidence |
| US 4,286,572 | Ventilating hood 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 4,552,059 | Flow measurement for exhaust-type canopy and ventilating hood Term ended Term ended no later than Nov 12, 2005 · Low confidence | Term ended | Term ended no later than Nov 12, 2005 | Low confidence |
| US 4,700,688 | Ventilating hood Term ended Term ended no later than Oct 20, 2007 · Low confidence | Term ended | Term ended no later than Oct 20, 2007 | Low confidence |
| US 4,753,218 | Continuous water wash hood type ventilating system Term ended Term ended no later than Jun 28, 2008 · Low confidence | Term ended | Term ended no later than Jun 28, 2008 | Low confidence |
| US 4,929,541 | Direct gas fired industrial air heater burner Term ended Term ended no later than May 29, 2010 · Low confidence | Term ended | Term ended no later than May 29, 2010 | Low confidence |
| US 4,993,944 | Direct gas-fired burner assembly Term ended Term ended no later than Feb 19, 2011 · Low confidence | Term ended | Term ended no later than Feb 19, 2011 | Low confidence |