73791144
Apr 4, 1989
Jul 24, 1990
MICROWAVE DETECTORS; OUTSIDE MICROWAVE BARRIERS; ELECTRONIC LOCKS AND CONTROLS; TELEPHONE TRANSMITTERS; POINT TO POINT TRANSMITTERS-RECEIVERS; OUTSIDE AND INSIDE SELF-PROTECTED ELECTRONIC SIRENS; POWER SUPPLIES FOR BATTERY CHARGERS; CABLES, BATTERIES AND PARTS THEREFOR; INFRARED DETECTORS; BURGLAR AND FIRE CONTROL PANES
Electrical and Scientific Apparatus