Agricultural machinery and attachments therefor, namely, rotary mowers, box scrapers, and three-point attachments; Agricultural machines, namely, such as cultivators, harvestors, disk harrows and seeders; Air powered tools, namely, such as drills, screwdrivers, rivet hammers and saws; Air-operated power tools, namely, impact wrenches, ratchet wrenches, drills, grinders and orbital sanders; Assembly lines, namely, a series of machines for assembling automobiles in successive stages; Conveyor b...