Spraying Devices and Appliances, Known in the Trade Under the Following Names-to Wit, Spray Guns, Paint Guns, Hand Operated Spray Guns, Automatically Operated Spray Guns, Automatic Spraying Machines, Reciprocating Automatic Spraying Outfits, Spray Nozzles, Extension Guns, Flock Guns, Oil Guns, Engine Cleaners, Air Guns, Air Blow Guns, Car Washing Guns; Also for Spray Material Containers for Use with Spray Appliances and Known as Paint Cups, Paint Cans, Paint Jars, Syphon Feed Cups, Pressure Feed Cups, and Attachments Therefor Known as Clamp Type Attachments, Thread Type Attachments, Screw Type Attachments, Adapter Type Attachments, Can Adapters, and Also Covers Therefor Known as Clamp Type Covers, and Thread Type Covers; Also for Accessories Used in Connection with Spray Appliances and Known as Material Containers, Material Tanks, Mixers, Agitators, Mixing Tanks, Air Motor Drive Type of Mixing and Agitating Units, Electric Motor Drive Type of Mixing and Agitating Units, Paint Strainers, Pressure Control Units for Material Drums, Gang Mixing Units, Painting Machines for Barrels, for Kegs and for Metal Cylindrical Containers, Pressure Material Tanks, Oil and Water Extractors and Separators, Painting Units Comprising Motor, Compressor Unit, Compressor Mounting Base and Spray Appliance, With or Without Pressure Tank, Air Pressure Regulators, Paint Pressure Regulators, Heat Exchangers, Painting Units Known as Portable Electric Motor Outfits, Portable Gasoline Motor Outfits, Heavy Duty Portable Spray Units of Various Types Such as Skids, Wheeled, Wheel Hand Cart, and Wheel Trailer, One-Man Portable Spray Painting Units, Two-Man Portable Spray Painting Units, Three-Man Spray Painting Outfits; Also for Water Cooled Compressors Used with Spray Appliances and Equipments, Horizontal Type Compressors, Air Motors, and Also for Cleaning Systems and Apparatus Used in Spraying Including Spray Booths, Water Wash Type Spray Booths, Respirators, Dry Type Spray Booths, Wash Liquid Sprayers, Filters Known as Eliminators, Exhaust Fans, Exhaust Units, Exhaust Systems, Spray Booth Fans, Canopy Exhaust Systems, Canopies Therefor; Also for Cooling Systems and Including Cooling Towers, Atmospheric Type Cooling Towers, Forced Draft Type Cooling Towers, Also for Atomizing Nozzles for Spraying Coating Materials, for Spraying Humidifying Materials, for Spraying Materials for Preventing Offset in Printing, and for Spraying Milk and the Like, Pneumatic Nozzles for Humidifying, Spray Drying Nozzles, Milk Powdering Nozzles; Also for Material Pumps, Material Strainers; Also for Turn Tables Used in Spray Finishing Operations, Such as Bench Type Turn Tables, Roller Type Turn Tables, Hand Operated Type Turn Tables, Pneumatic Lift Type Turn Tables, Stop and Go Type Turn Tables, Bench Non-Tilting Type Turn Tables, Bench Tilting Type Turn Tables, Air Motor Type Turn Tables, and Electric Motor Type Turn Tables; Also for Traveling and Rotating Type Article Holders Used in Spraying Operations