US9404897B2 - Method for the Non-Destructive Inspection of a Test Object of Great Material Thickness by Means of Ultrasound, the Use of a Test Probe for Carrying Out the Method, an Ultrasonic Test Probe, a Control Unit for an Ultrasonic Test Probe and a Device for the Non-Destructive Inspection of a Test Object of Great Material Thickness by Means of Ultrasound | Patent Bear