starter motors; engines and motors for the generation of electricity; agitators for circulating liquid media; conveyors; machines for gas utilization and gas disposal, in particular flare installations; catalytic converters; electric generators; compressors for machines; gas and steam turbines; [ engines and motors for model vehicles, aircraft and boats, namely, combustion engines; ] transmission gears for machines, namely, couplings, gear wheels, gears, shafts, belt and chain drives; machine...