AGRICULTURAL MACHINERY, IMPLEMENTS, FARM-OPERATING EQUIPMENT, AND PARTS THEREOF-NAMELY, TRACTORS, INCLUDING FARM TRACTORS, ORCHARD TRACTORS, ROAD TRACTORS, INDUSTRIAL TRACTORS AND TRACTORS FOR GENERAL PURPOSES; PORTABLE ENGINES; SKID ENGINES; COMBINATION HARVESTER THRESHERS, INCLUDING PRAIRIE COMBINES, HILLSIDE COMBINES, GRAIN BINS, WINDROW HARVESTERS, AND PICKUP ATTACHMENTS; BALING PRESSES FOR HAY, STRAW, AND OTHER MATERIALS; PLOWS, INCLUDING GANG PLOWS, TWO-WAY PLOWS, TRACTOR PLOWS, TRACTOR DISK PLOWS, WHEATLAND DISK PLOWS, AND PLOWS FOR ALL PURPOSES; HARROWS, INCLUDING SPIKE-TOOTH HARROWS, SPRING-TOOTH HARROWS, AND HARROWS FOR ALL PURPOSES; CULTIVATORS, INCLUDING CORN CULTIVATORS, COTTON CULTIVATORS, BEET CULTIVATORS, LISTER CULTIVATORS, CULTIVATORS GENERALLY, AND CULTIVATOR ATTACHMENTS FOR TRACTORS; FIELD TILLERS, ORCHARD TILLERS; GRAIN DRILLS, INCLUDING PLAIN DRILLS, FERTILIZER DRILLS, DEEP-FURROW DRILLS, PRESS DRILLS, SEEDERS, LIME AND FERTILIZER SOWERS; GRAIN BINDERS; CORN BINDERS, INCLUDING TALL BINDERS, SHORT BINDERS, AND REGULAR BINDERS; CORN HUSKERS AND SHREDDERS, CORN HARVESTERS, COTTON HARVESTERS; RAKES, INCLUDING HAY RAKES, CORNSTALK OR HEAVY-DUTY RAKES, DUMP RAKES, SIDE-DELIVERY RAKES, AND TEDDERS; MOWERS, HAY LOADERS, FEED GRINDERS, BEET PULLERS, MANURE SPREADERS, STALK CUTTERS, FUEL AND WATER TENDERS, MIDDLE BREAKERS, RIDGE BUSTERS, ROTARY HOES, AND PARTS OF ALL SAID MACHINERY, IMPLEMENTS, AND FARM-OPERATING EQUIPMENT