7
Machines and machine tools; motors and engines (except for land vehicles); machine coupling and transmission components (except for land vehicles); agricultural implements other than hand-operated; incubators for eggs.
tractor towed or carried implements, namely, plows, mowers, reapers, blades, scrapers, rakes, buckets, tillers, discs, sweepers, harrows, spreaders, sprayers, graders, loaders, drags, augers, cutters, spears, forks, shears, balers, cultivators, seeders, pluggers, grapples, trenchers, backhoes, boom poles, mixers, bedders, post drivers, rollers, pulverizers, [ stump grinders, ] chippers, mulchers, saws, snow blowers, vacuums and generators