Advanced Cellular Telecom, Corp.
Records under this name other than patents Advanced Cellular Telecom, Corp. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Back to Advanced Cellular Telecom, Corp.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 4,243,844 | Hold circuit for telephone system Term ended Term ended no later than Jan 6, 2001 · Low confidence | Term ended | Term ended no later than Jan 6, 2001 | Low confidence |
| US 4,251,692 | Telephone call restricting apparatus Term ended Term ended no later than Feb 17, 2001 · Low confidence | Term ended | Term ended no later than Feb 17, 2001 | Low confidence |
| US 4,626,630 | Telephone call forwarding device Term ended Term ended no later than Dec 2, 2006 · Low confidence | Term ended | Term ended no later than Dec 2, 2006 | Low confidence |
| US 4,670,900 | Single line telephone call forwarding device Term ended Term ended no later than Jun 2, 2007 · Low confidence | Term ended | Term ended no later than Jun 2, 2007 | Low confidence |
| US 4,726,048 | Telephone privacy circuit Term ended Term ended no later than Feb 16, 2008 · Low confidence | Term ended | Term ended no later than Feb 16, 2008 | Low confidence |
| US 4,768,224 | Single telephone line call forwarding device Term ended Term ended no later than Aug 30, 2008 · Low confidence | Term ended | Term ended no later than Aug 30, 2008 | Low confidence |
| US 4,941,166 | Muting circuit for telephone answering machine Term ended Term ended no later than Jul 10, 2010 · Low confidence | Term ended | Term ended no later than Jul 10, 2010 | Low confidence |
| US 5,131,031 | Hold circuits for telephone systems Term ended Term ended no later than Jul 14, 2012 · Low confidence | Term ended | Term ended no later than Jul 14, 2012 | Low confidence |
| US 5,157,719 | Automatic area code dialing apparatus and methods particularly adapted for cellular or other types of telephone systems Term ended Term ended no later than Oct 20, 2012 · Low confidence | Term ended | Term ended no later than Oct 20, 2012 | Low confidence |
| US 5,168,320 | Colorimeter Term ended Term ended no later than Dec 1, 2012 · Low confidence | Term ended | Term ended no later than Dec 1, 2012 | Low confidence |