Selection control and indication means
Self-calibrating ultrasonic range finder
Self-propelled vehicle for destroying ground mines
Signal processor for narrow band sonar signals
Sonar apparatus having improved gain control
Sonar depth sounder apparatus
Sonar detector for exiting passengers
Sonar distance sensing apparatus
Sonar scanner
Sonar Scanner
Sonar scanner
Sonic detection and tracking system
Sonic spectrometer and treatment system
Split beam sonar
System and method for enhancing weak target signals for a...
System and method for ultrasonic measurement of material level
System for detecting the position of an object relative to a man
System for the control of a member for following a moving object
System for ultrasonically detecting the relative position of a m