OMNIFREQUENCY

Buried utility locators, namely, electromagnetic apparatus used to generate or measure magnetic fields for locating and mapping buried utility pipes, cables, and conduits; sensors for magnetic field detection of buried objects; mapping locators, namely, buried utility locators that collect and generate mapping data during operation; sondes for generating magnetic field signals for sensing by buried utility locators; transmitters for use with locators, namely, current transmitters used with buried utility locators; coupling apparatus for coupling current signals from transmitters to buried conductors; RFID tags; buried marker balls, namely, electronic marker balls used to electronically mark and locate underground utilities by producing a uniform several foot in diameter spherical radio frequency field