76341058
Nov 21, 2001
Aug 26, 2003
Police radar and laser detectors and annunciators, and specialized circuitry incorporated therein to reduce false alarms, mute the annunciator, control the audible volume thereof, improve the response time of the laser and radar detectors, enhance frequency discrimination of the detectors, reduce power consumption, and increase reliability and useful life of the detectors and annunciators
Electrical and Scientific Apparatus