Pruning and logging chain saws; agricultural machines, namely, cultivators, harvesters, disk harrows, seeders; mowing and reaping machines; chain saws; hand-held tools, other than hand-operated, namely, electric hammers; dynamos; gasoline engines not for land vehicles; air filters for mechanical purposes and vehicle motors; mufflers for automobile engines; internal combustion engines not for land vehicles; tractors; combined harvesting machines for grain, motorcycles, and steam locomotives