Utility locators for detecting utilities by sensing magnetic fields, namely, electromagnetic apparatus for electromagnetically locating hidden or buried utility pipes, conduits, cables, or other electrical conductors; Signal induction devices for inducing current onto utilities or other electrical conductors using magnetic fields comprising magnetic field antennas; utility transmitters for generating current signals for coupling to utilities or other electrical conductors; coupling apparatus for inductively coupling signals to utilities or other electrical conductors; downloadable software for use with utility locators or transmitters for control or data display
Electrical and Scientific Apparatus