73698644
Dec 2, 1987
Feb 21, 1989
DETECTORS AND MONITORS FOR USE IN DETECTING AND MEASURING NITROGEN-CONTAINING EXPLOSIVES SUCH AS TRINITROTOLUENE (TNT), DINITROTOLUENE (DNT), AND OTHERS, AND PARTICULARLY EXPLOSIVES DETECTION TESTERS FOR SCREENING PERSONS, VEHICLES, PACKAGES, LUGGAGE, BUILDINGS, ETC. FOR THE PRESENCE OF CONCEALED EXPLOSIVES
Electrical and Scientific Apparatus