7 Agricultural implements, other than hand-operated, namely, cultivators, harvesters, disc harrows, sprayers, harrows, packers, seeders, and disc coulters; sheaf-binding machines; ploughs; knives for mowing machines; knives, electric; electric knives being parts of machines; power-operated and tractor-towed cultivators; agricultural machines, namely, cultivators, harvesters, reapers, tractors, packers, seeders; agricultural machines for ploughing, namely, ploughs; agricultural machines for cultivating, namely, cultivators; agricultural machines for ground cultivation, namely, cultivators, harvesters, disc harrows, sprayers, harrows, packers, seeders, and disc coulters; agricultural seed planting machines, namely, sowers and seeders; agricultural machines for fertilizing, namely, fertilizing machines and sprayers; reapers; agricultural machines for grass collecting, namely, grass mowers, reapers, balers; agricultural machines for grass cutting, namely, lawn mowers; towable agricultural machines, namely, cultivators; power-operated clearing saws; power-operated string trimmers for garden use; grain husking machines; cutting discs for use as parts of machines; tractor-towed harrows; disc harrows; harvesting machines, namely, cultivators, harvesters, reapers; power-operated lawn aerators being machines; power saw blades; chaff cutter blades; machine parts, namely, blades; balers for agricultural use; blades for earth moving machines, being parts of machines; blades for powered tools; reapers and binders; reapers and threshers; tractor-towed reapers and threshers; reapers; springs being parts of machines; earth moving machines, namely, excavators; hole excavators being powered hole openers used to enlarge holes in the ground; sowers; seed drills; fertilizer distributing machines and implements, other than hand-operated implements, namely, fertilizing machines, sprayers, boom irrigators, drip irrigators, overhead irrigators, capillary irrigators; grain separators; riding lawn mowers; power-operated lawn and garden string trimmers; lawnmowers; power-operated clippers; threshing machines; power-operated cutters for trees, shrubbery, brush, hay and grass; power-operated tips for cutters for trees, shrubbery, brush, hay and grass; cultivator vibrators for industrial use; ploughshares; garden rotavators; chucks for power drills; grindstones; power-operated tree branch pruners; hay rasps; hay rakes; power-driven motor hand saws