COMPUDYNE
AUTOMATIC PROCESS CONTROL SYSTEMS FUNCTIONING RESPONSIVELY TO FLUCTUATIONS OF VARYING MAGNITUDE OF A CONDITION SUCH AS TEMPERATURE, PRESSURE, FLOW POSITIONING, WEIGHING OF MATERIALS, ELECTRICAL ENERGY, TIME, ETC., FOR USE IN CHEMICAL, UTILITY, MINING, PULP AND PAPER, PETROLEUM, METAL AND FUEL PROCESSING, AERONAUTICAL AND AEROSPACE TESTING FACILITIES, AND KINDRED SUBJECT MATTER
Expired · March 10, 1964 · 72189234 ·