Prescom
Records under this name other than patents Prescom holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Showing 1 to 4 of 4 · Back to Prescom
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 4,975,902 | Circuit for putting in conference a plurality of participants in telecommunication systems Term ended Term ended no later than Dec 4, 2010 · Low confidence | Term ended | Term ended no later than Dec 4, 2010 | Low confidence |
| US 5,524,059 | Sound acquisition method and system, and sound acquisition and reproduction apparatus Term ended Term ended no later than Jun 4, 2016 · Low confidence | Term ended | Term ended no later than Jun 4, 2016 | Low confidence |
| US 5,778,061 | Switching device for a telephone set with handset, switching an auxiliary device by substituting for the handset Term ended Term ended no later than Jul 7, 2018 · Low confidence | Term ended | Term ended no later than Jul 7, 2018 | Low confidence |
| US 5,970,137 | Loudspeaker gain correction for a hands-free telephone terminal Term ended Term ended no later than Oct 19, 2019 · Low confidence | Term ended | Term ended no later than Oct 19, 2019 | Low confidence |