VISONIK
EQUIPMENT FOR SUPERVISION OR CONTROL OF HEATING AND AIR-CONDITIONING SYSTEMS, AS EXEMPLIFIED BY THE CONTROL, MEASUREMENT, INDICATION, LOGGING, PROJECTION, RECORDING AND DISPLAYING OF HEATING AND AIR-CONDITIONING DATA, THE PRIMARY CONTROL OF HEATING AND AIR-CONDITIONING SUBSYSTEMS, INDICATION AND CONTROL OF REMOTE ALARM SYSTEMS, AND KIGITAL TIME INDICATION
Expired · January 5, 1970 · 72347710 ·