Device for signaling the felling of a tree and a system for fore

Device for the verification of an alarm

Device for the verification of an alarm

Device for validating authenticity features on documents of...

Device inventory by sound

Device learning mode method

Device to facilitate the arming of an alarm system and to provid

Device with built-in signal discrimination and output...

Device, system and method for the location and...

Diagnosis switch

Diagnostic system employing a magnetic field responsive apparatu

Diagnostic system for combustion controller

Digital alarm system with variable alarm hysteresis

Digital communication system and method

Digital compensation circuit for calibration of sensors

Direct aircraft-to-aircraft data link communication

DIRECT DISPATCHERLESS AUTOMATIC VEHICLE-TO-VEHICLE AND...

Disaster prevention monitoring apparatus

Disaster prevention monitoring apparatus and method

Display apparatus for a first out type of fault status annunciat