Rixson-Firemark Inc.
Records under this name other than patents Rixson-Firemark Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Showing 1 to 10 of 10 · Back to Rixson-Firemark Inc.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 3,968,379 | Photocell smoke detector Term ended Term ended no later than Jul 6, 1996 · Low confidence | Term ended | Term ended no later than Jul 6, 1996 | Low confidence |
| US 3,982,237 | Combination door chime and particulate products of combustion detector Term ended Term ended no later than Sep 21, 1996 · Low confidence | Term ended | Term ended no later than Sep 21, 1996 | Low confidence |
| US 4,069,544 | Electrically actuated door holder and release Term ended Term ended no later than Jan 24, 1998 · Low confidence | Term ended | Term ended no later than Jan 24, 1998 | Low confidence |
| US 4,072,917 | Switch actuating hinge Term ended Term ended no later than Feb 7, 1998 · Low confidence | Term ended | Term ended no later than Feb 7, 1998 | Low confidence |
| US 4,161,804 | Heat-actuated door latch Term ended Term ended no later than Jul 24, 1999 · Low confidence | Term ended | Term ended no later than Jul 24, 1999 | Low confidence |
| US 4,238,679 | Dual-chamber ionization smoke detector assembly Formerly held Term ended Term ended no later than Dec 9, 2000 · Low confidence | Term ended | Term ended no later than Dec 9, 2000 | Low confidence |
| US 4,803,754 | Electromechanical door holder-closer Formerly held Term ended Term ended no later than Feb 14, 2009 · Low confidence | Term ended | Term ended no later than Feb 14, 2009 | Low confidence |
| US 4,915,431 | Electromagnetic lock having a self-adjusting switch assembly for door-movement alert Formerly held Term ended Term ended no later than Apr 10, 2010 · Low confidence | Term ended | Term ended no later than Apr 10, 2010 | Low confidence |
| US 5,005,881 | Door locking mechanism Formerly held Term ended Term ended no later than Apr 9, 2011 · Low confidence | Term ended | Term ended no later than Apr 9, 2011 | Low confidence |
| US D260,498 | Smoke detector housing Formerly held Term ended | Term ended |