Magnetic utility locators, namely, devices for magnetically sensing hidden or underground objects; electromagnetic devices used to generate or measure magnetic fields for mapping hidden or buried objects; utility locator transmitters for generating current signals for coupling to hidden or buried pipes, cables, or conduits to generate magnetic fields for detection by utility locators; batteries for utility locators and utility locator transmitters; battery chargers for use with utility locators and utility locator transmitters; receivers for receiving and detecting radio frequency identification (RFID) signals from buried electronic markers; video inspection equipment for inspecting pipes or other cavities, namely, video cameras, video cables, and flat panel display screens; Electronic image, video and data transmitter and receivers for wired and wireless communication of image and video signals and camera control signals; apparatus for displaying information and images of hidden or buried utilities or other objects, namely, video displays and monitors coupled to video inspection cameras; electromagnetic sensors for measuring magnetic fields generated from buried utilities, sondes for generating dipole magnetic fields for sensing by utility locators, horizontal drilling locating equipment consisting of electromagnetic beacons used to generate or measure magnetic fields to monitor or control horizontal drilling operations; sondes for generating magnetic field signals for sensing by buried utility locators; video inspection systems consisting primarily of camera heads, push cables, push cable reels, and camera control units for controlling the camera heads and displaying and storing captured video, images, or data associated with hidden or buried pipes or other cavities; batteries for use with sondes; batteries for use with video inspection equipment
Electrical and Scientific Apparatus