Sonic frequency generators, namely, oscillators; sonic regulators, namely, sound mixers; data processors and computers; computer operating software; computer hardware; ultrasonic generators for monitoring the status of industrial machinery in the nature of electronic magnetostrictive equipment, namely, ultrasonic wave generators; ultrasonic welding transformers; ultrasonic electroacoustic transducers for ultrasonic cleaners and ultrasonic welding; electroacoustic pipe transducers; rod-like el...