74424653
Aug 13, 1993
Jul 11, 1995
acoustic sensor equipment for detecting and locating potential problems in industrial equipment or processes; namely, solids flow sensors, leak detectors, cavitation monitors, machine conditions monitors, sludge monitors, pump monitors, sand monitors, monitors for detecting movement of rolling stock on a track, monitors for detecting movement of cleaning pigs in pipes, milling rolls conditions monitors, foreign object detectors, and level monitors
Electrical and Scientific Apparatus