77043144
Nov 13, 2006
Apr 26, 2011
robotic video inspection crawler systems composed of video monitors and remote-controlled video cameras mounted on remote-controlled robotic crawlers for use in inspecting inaccessible and hazardous spaces, namely, underground infrastructures, tanks, large vessels, manholes, wet wells, mainlines, sewer lines, water and storm water lines, and electrical conduits
Electrical and Scientific Apparatus