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Class [023]
Yarns and Threads

ADDITIVE FEEDERS; AERATORS FOR AERATING AND BLENDING FOUNDRY MOLDING SAND; ASH HANDLING MACHINERY; AUTOMOBILE SHREDDERS; BACK STOPS FOR PREVENTING REVERSE TRAVEL OF ELEVATORS AND ELEVATING CONVEYORS; BALE BREAKERS; BAND BRAKES; BARK AND SAND REMOVAL UNITS FOR REMOVING SAND AND BARK FROM WOODYARD FLUMES; BAR SCREENS FOR SCREENING WATER AND SEWAGE FLUMES, AND THE LIKE; BEARING BOXES; BEARINGS; BELT CONVEYOR TRIPPERS; BELT IDLERS; BELT PLOWS; CONVEYOR COMPONENTS-NAMELY, BIN GATES AND BIN VALVES FOR CONTROLLING THE DISCHARGE OF GRANULAR MATERIALS FROM BINS AND THE LIKE; BONE AND MEAT HASHERS; BOOMS; BUCKET LOADERS; CANE CARRIER CONVEYOR CHAINS FOR CONVEYING SUGAR CANE IN SUGAR MILLS; CAR UNLOADERS FOR UNLOADING LOOSE MATERIAL FROM RAILROAD BOX CARS AND THE LIKE; CHAIN IDLERS; CHAIN LINK ATTACHMENTS FOR ATTACHING FLIGHTS, BUCKETS AND THE LIKE TO CHAIN CONVEYORS; COAL CLEANING JIGS; COAL CRUSHERS; CONVEYORS-NAMELY, APRON, BELT, CABLE, DRAG, CHAIN, LUMBER, MINE, MOLD, PAN, PIVOTED BUCKET, PORTABLE, RETARDING, SCRAPER, SHUTTLE BELT, SPIRAL, TROLLEY, V-BUCKET, VIBRATING, AND WOOD REFUSE TYPES OF CONVEYORS; CRUSHERS-NAMELY, DOUBLE ROLL, JAW, METAL TURNINGS, ROTARY RING, SINGLE ROLL AND SWING HAMMER TYPES OF CRUSHERS; DISINTEGRATORS; DUMPS FOR MOLD CONVEYORS; ECCENTRICS FOR CONVERTING ROTARY MOTION INTO LINEAR MOTION; ELEVATOR BOOTS; ELEVATOR BUCKETS; ELEVATOR CASINGS; ELEVATORS-NAMELY, BAG, BARREL, BUCKET, SLUDGE, SPIRAL LIFT, STONE, AND V-BUCKET TYPES OF ELEVATORS; FEEDERS-NAMELY, APRON, BELT, CHAIN AND FLIGHT, CHEMICAL, DRAG, PLATE AND VIBRATING TYPES OF FEEDERS; FLASK FILLERS; FLIGHTS; FLOCCULATING APPARATUS FOR BUILDING OF FLOCS IN WATER AND SEWAGE TREATING APPARATUS; FOUNDRY EQUIPMENT-NAMELY, FLASK FILLERS, MIXERS, MOLD CONVEYORS AND SCREENS; FOUNDRY SAND CONDITIONERS; GREASE AND PAUNCH MANURE REMOVAL SYSTEMS; GRIT WASHERS; HAMMER MILLS FOR PULVERIZING OR SHREDDING METALLIC MATERIAL AND MUNICIPAL AND INDUSTRIAL WASTE; IMPACTORS; LADLE PUSHERS; LOG HAUL-UPS; MATERIAL PUSHING OR CARRYING FLIGHTS FOR CHAIN CONVEYORS; MECHANICAL GRINDERS FOR GRINDING GARBAGE AND SCREENINGS FROM WATER OR SEWAGE STREAMS; MILL SCALE COLLECTORS; MIXERS FOR FOUNDRY MOLDING SAND; MOLD WEIGHT CONVEYORS; PILLOW BLOCKS; POCKET SHEAVES; POURING CONVEYORS; PUG MILLS; ROTARY TABLE FEEDERS; SAND MULLERS; SANITARY SCUM REMOVERS; SANITARY MIXERS; SCREENS-NAMELY, REVOLVING AND SHAKER TYPES OF SCREENS; SLUDGE COLLECTORS; SLUDGE ELEVATORS; SPIRAL CONVEYOR HANGERS; STACKERS; SUGAR MINGLERS; TAKE-UP BEARINGS FOR BELT CONVEYORS; TAKE-UPS; TROUGHS FOR SCRAPER CONVEYORS AND SPIRAL CONVEYORS; VIBRATING EQUIPMENT-NAMELY, BARREL PACKERS, CONVEYORS, COOLERS, DRYERS, ELECTRIC VIBRATING FEEDERS, MECHANICAL VIBRATING FEEDERS, SCREENS AND KNOCKOUTS; AND PARTS OF ANY OF THE FOREGOING