73384158
Sep 7, 1982
POWER MEGAPHONES, LONG RANGE SOUND PROJECTORS, MOBILE PUBLIC ADDRESS SYSTEMS, PORTABLE DIRECTIONAL HORN SPEAKER SYSTEMS, PORTABLE MESSAGE ANNOUNCERS, SOUND SYSTEMS AND PARTS THEREOF FOR PAGING AND INTERCOMMUNICATION BETWEEN REMOTELY SPACED LOCATIONS, AND PARTS THEREO F FORUSE WITH THE FOREGOING
Electrical and Scientific Apparatus