Underground Technologies
Records under this name other than patents Underground Technologies holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
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| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 4,842,207 | Device for detecting and measuring the tension on a cable Term ended Term ended no later than Jun 27, 2009 · Low confidence | Term ended | Term ended no later than Jun 27, 2009 | Low confidence |
| US 4,858,703 | Self-propelled subsoil penetrating tool system Term ended Term ended no later than Aug 22, 2009 · Low confidence | Term ended | Term ended no later than Aug 22, 2009 | Low confidence |
| US 4,866,214 | Service cable for a subsoil penetrating tool and method of preventing rotation of the cable when in use Term ended Term ended no later than Sep 12, 2009 · Low confidence | Term ended | Term ended no later than Sep 12, 2009 | Low confidence |
| US 4,905,773 | Self-propelled subsoil penetrating tool system Formerly held Term ended Term ended no later than Mar 6, 2010 · Low confidence | Term ended | Term ended no later than Mar 6, 2010 | Low confidence |
| US 4,923,134 | Self-propelled subsoil penetrating tool system Formerly held Term ended Term ended no later than May 8, 2010 · Low confidence | Term ended | Term ended no later than May 8, 2010 | Low confidence |
| US 4,955,439 | Self-propelled subsoil penetrating tool system Formerly held Term ended Term ended no later than Sep 11, 2010 · Low confidence | Term ended | Term ended no later than Sep 11, 2010 | Low confidence |
| US 4,957,173 | Method and apparatus for subsoil drilling Term ended Term ended no later than Sep 18, 2010 · Low confidence | Term ended | Term ended no later than Sep 18, 2010 | Low confidence |
| US 4,957,473 | Rotational speed differential responsive type torque transmitting assembly Formerly held Term ended Term ended no later than Sep 18, 2010 · Low confidence | Term ended | Term ended no later than Sep 18, 2010 | Low confidence |
| US 5,054,565 | Steering mechanism for a subsoil boring apparatus Formerly held Term ended Term ended no later than Oct 8, 2011 · Low confidence | Term ended | Term ended no later than Oct 8, 2011 | Low confidence |
| US 5,096,003 | Method and apparatus for subsoil drilling Term ended Term ended no later than Mar 17, 2012 · Low confidence | Term ended | Term ended no later than Mar 17, 2012 | Low confidence |