AC and DC Adjustable Speed Drives; Alternating Current Rectifiers; Temperature, Pressure, Density, Flow Rate, and pH Determining Units for Process Monitoring and Water Treatment Control; Arc Welding Apparatus; Automatic Temperature Regulators; Temperature Responsive Bimetallic Discs for Use in Controls; Bin and Tank Level Indicators; Circuit Breakers; Control Panels; Controls for Heating, Cooling and Ventilation; Thermostatic Controls for Hot Water, Electric and Oil Heating Systems; Cooled and Heated Liquid Dispensing Units; [ Electric Alarm Bells; ] Electric Current Control Apparatus; Electric Blowers; Electrical Cable Joints and Junctions; Electric Coil Holders; Electric Coils; Electric Current Limiters; [ Electric Door Chimes; ] Electric Flexible Conductors; Electric Igniters for Gas Clothes Driers and Gas and Oil Furnaces; [ Electric Insect Killers; ] Electric Motor Controls; Electric Power Units; Uninterruptable Power Supplies; Electric Receptacle Outlets; Electrical Cables; Electrical Connectors, Distribution Boxes and Adapter Assemblies; Low Voltage Controls; Electric Relays; Electric Resistor Ribbon; Electric Resistor Wire; Electric Resistors; Electric Rheostats; Electric Soldering Irons; Electric Switches; Electric Thermal Cutouts and Safety Fuses; Electric Transformers; Electrical Apparatus Supports; Electrical Distribution Boards and Boxes; Electrical Junction Boxes; Electrical Reversers; Electrical Branch and Shunt Terminals; Electromagnetic Contactors; Electromagnetic Valves; Electrostatic Air Cleaners; [ Electronic Apparatus-Namely, Antennas, Antenna Feed Units, ] Digital Control Units, Ferrite Units as Components of Antennas, [ Fire Control Radar Units, Radio Frequency Coaxial Components, Radio Frequency Test Units, ] Special Micro Wave and Radio Frequency Test Units, and Electronic Power Supplies for Furnishing Precisely Regulated DC Voltages; Pressure and Vacuum Gauges; Mechanically Operated Valves; Wet and Dry Shop Vacuums; Graduated Folding Rules for Carpenters and Mechanics; Gas Burner Controls; Gas Pressure Regulators; Solenoid Operated Gas Valves; Hermetic Terminals; [ Intercom Units; ] Electrical Inverters; Liquid and Flowable Solids Level Indicators; Levels; Luminous Signs (Exit Signs); Make and Break Switches (Electrical); General Purpose Manual and Automatic Locking Measuring Tapes; [ Military Electronic Countermeasure Units; Automatic Test Units for Testing Components of Military Aircraft and Other Military Hardware; Microwave Antenna Units; ] Acoustical Test Chambers; Non-Contacting Sensors, Display and Recording Units for Measuring Level, Density, Weight, Mass Flow and Moisture Content of Industrial Process Materials; Petrol Meters; Portable Electric Power Drives; Pressure-Electric and Thermoelectric Controls; Quantity Indicators; [ Radar Apparatus; ] Recording Meters; Regulatory, Recording and Interpretive Fluid Meters and Devices Used in Connection Therewith-Namely, Flowmeters for Measuring, Indicating, Recording and Controlling the Flow of Fluids, Oil Gauges, Liquid Level Gauges, Gas Flow Calibrators, and Revolution Counters; Safety Goggles; [ Seat Belt Warning Units for Vehicle Passengers; Intrusion, Smoke and Fire Detectors and Alarms; ] Solenoid Valves and Voltage Surge Protection Units for Air Conditioning and Refrigeration Equipment; Solid State DC Drives; Solid State Speed Controls for AC Motors; Solid-State Flame Detecting Oil Burner Controls; Spectrum Analyzers; Speed Controllers; Switch Boxes (Electrical); Switchboards (Electrical); Electrical Temperature and Pressure Sensitive Switches; High Speed Data Recording Tape Recorders; Thermostats and Thermostatic Controls; Time Delay Equipment-Namely, Detectors, Modulators and Indicators, Malfunction Electronic Indicators, Time Delay R-F Modules, Wide-Band Malfunction Measurers, Wide-Band Phase Measurers, Phase Indicators, Time Delay Measurers, Phase and Impedance Measurement Testers, Wide-Band Multifunction Testers, Wide-Band Impedance Plotters, Telemetry Validation Testers, Automatic Antenna Testers, Automatic Component Testers, Time-Switches (Electrical); Transformers; Electronic Motion or Position Transmitters, Particularly Adapted for Use in Connection with Flowmeters and Liquid Level Indicators; Valves (Thermionic); Valves Operated Automatically by Electric Current Control, by Solenoid or by Temperature or Other Changes in Physical Conditions; Water Heater Controls; Wire Ties for Attaching an Electrical Conductor to an Insulator Support, Electric Heating Cables