9 Ultrasonic, non-destructive, non-medical testing and inspection devices, namely, ultrasonic signal generators, ultrasonic signal receivers, signal processing units, and ultrasonic probes, all for use in generating or detecting ultrasonic waves in structures such as pipelines for the purpose of detection of flaws, cracks, corrosion, erosion, and degradations in structures such as pipelines; downloadable computer software for interpreting, displaying, and storing data related to received ultrasonic signals from ultrasonic, non-destructive, non-medical testing and inspection devices