ELECTRONIC ATMOSPHERE CONTROL SYSTEMS USED IN CONTROLLING THE MIXING OF GASES IN INDUSTRIAL FURNACES, COMPRISED PRIMARILY OF ELECTRONIC CONTROL PANELS, FLOW METERS, FLOW AND PRESSURE SWITCHES FOR MONITORING AND CONTROLLING THE FLOW OF GASES, PRESSURE REGULATORS FOR USE IN CONTROLLING THE FLOW OF GASES, SOLENOIDS, METERING VALVES FOR MEASURING AND CONTROLLING THE FLOW OF GASES, ELECTRIC WARNING HORNS AND SYSTEM STATUS CONTROL DEVICES IN THE NATURE OF CARBON MONOXIDE SENSORS AND OXYGEN PROBES, ...