75391882
Nov 18, 1997
Sep 28, 1999
apparatus for locating underground pipes, cables, objects, structures, cavities, tree root systems, fractures and geological discontinuities from above ground; apparatus for detecting and mapping the location of underground pipes, cables, objects, structures, cavities, tree root systems, fractures and geological discontinuities from about ground
Electrical and Scientific Apparatusnon-intrusive surveys for locating underground pipes, cables, objects, structures, cavities, tree root systems, fractures and geological discontinuities from above ground; non-intrusive surveys for detecting and mapping the location of underground pipes, cables, objects, structures, cavities, tree root systems, fractures and geological discontinuities from above ground
Computer and Scientific