Acoustic emission monitoring system
Acoustic foghorn for directional signaling
Automated flash-bang method and apparatus for determining lightn
Intruder detecting security system
Method and apparatus for measuring the interior dimensions of a
Position sensing readout
Position sensing readout
Rate sensitive system for a seismic sensing range containment ap
Seismic intrusion detector system
Sonic measuring system
System and method for determining position and velocity of an in
Vibration detection and analysis system employing an intrinsic s