Helmets Limited
Records under this name other than patents Helmets Limited holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Showing 1 to 7 of 7 · Back to Helmets Limited
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 4,199,823 | Disengageable helmet visor clamp Term ended Term ended no later than Apr 29, 2000 · Low confidence | Term ended | Term ended no later than Apr 29, 2000 | Low confidence |
| US 4,571,747 | Helmet with visor mechanism Term ended Term ended no later than Feb 25, 2006 · Low confidence | Term ended | Term ended no later than Feb 25, 2006 | Low confidence |
| US 4,648,138 | Retention and quick release mechanism Term ended Term ended no later than Mar 10, 2007 · Low confidence | Term ended | Term ended no later than Mar 10, 2007 | Low confidence |
| US 4,730,612 | Helmet with auxiliary, electrically operated service Term ended Term ended no later than Mar 15, 2008 · Low confidence | Term ended | Term ended no later than Mar 15, 2008 | Low confidence |
| US 4,907,300 | Helmet and visor mechanism therefor Term ended Term ended no later than Mar 13, 2010 · Low confidence | Term ended | Term ended no later than Mar 13, 2010 | Low confidence |
| US 5,324,460 | Method of making a helmet liner Term ended Term ended no later than Jun 28, 2014 · Low confidence | Term ended | Term ended no later than Jun 28, 2014 | Low confidence |
| US 5,329,642 | Helmets Term ended Term ended no later than Jul 19, 2014 · Low confidence | Term ended | Term ended no later than Jul 19, 2014 | Low confidence |