Surface Systems, Inc.
Records under this name other than patents Surface Systems, Inc. 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 Surface Systems, Inc.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 3,986,110 | Water depth measuring device Term ended Term ended no later than Oct 12, 1996 · Low confidence | Term ended | Term ended no later than Oct 12, 1996 | Low confidence |
| US 4,135,151 | Apparatus for detecting wet and icy surface conditions Term ended Term ended no later than Jan 16, 1999 · Low confidence | Term ended | Term ended no later than Jan 16, 1999 | Low confidence |
| US 4,281,286 | Apparatus and method for detecting wet and icy conditions on the surface of a pathway Term ended Term ended no later than Jul 28, 2001 · Low confidence | Term ended | Term ended no later than Jul 28, 2001 | Low confidence |
| US 4,679,160 | Ultrasonic depth measurement apparatus and methods Term ended Term ended no later than Jul 7, 2007 · Low confidence | Term ended | Term ended no later than Jul 7, 2007 | Low confidence |
| US 4,750,117 | Ultrasonic depth measurement apparatus and methods Term ended Term ended no later than Jun 7, 2008 · Low confidence | Term ended | Term ended no later than Jun 7, 2008 | Low confidence |
| US 4,897,597 | Apparatus and methods for detecting wet and icy conditions Term ended Term ended no later than Jan 30, 2010 · Low confidence | Term ended | Term ended no later than Jan 30, 2010 | Low confidence |
| US 5,774,374 | Road surface measuring device and method Term ended Term ended no later than Jun 30, 2018 · Low confidence | Term ended | Term ended no later than Jun 30, 2018 | Low confidence |