Generators of electricity with waste heat utilization systems, [ agricultural implements other than hand-operated, namely, cultivators, harvesters, disk harrows and seeders; agricultural machines, namely, cultivators, harvesters, disk harrows and seeders; ] motors not for land vehicles and parts therefor, [ motors for ships; ] engines not for land vehicles and parts therefor; [ engines for ships; ] electric pumps; mechanical pumps; [ lawnmowers, waste compacting machines; waste crushing machines; garbage disposals; ] AC generators of electricity; and DC generators of electricity