75384901
Nov 5, 1997
May 16, 2000
electronic article and object surveillance and detection equipment, namely, transmitting and receiving antenna and passive receiving or receivers/re-radiating transponders adapted to be connected to the articles and objects under surveillance, and visual, audible and/or tactile alarm apparatus for indicating pilferage or shoplifting, utilizing transmitted radio frequency or micro way signals to establish a surveillance or detection zone in which the presence of the transponders is sensed by receivers detecting re-rediate signals from the transponders, the goods and equipment being adapted to communication, navigation and security uses, particularly to prevent pilferage or shoplifting
Electrical and Scientific Apparatus