Autogenous soldering machines; Electric desoldering pumps; Electric powered soldering irons; Electric soldering apparatus; Electric soldering irons; Gas-operated soldering irons; Gas welding guns; Soldering apparatus, electric; Soldering apparatus, gas-operated; Soldering blow pipes, gas-operated; Soldering irons, electric; Soldering irons, gas-operated; Soldering lamps; Welding apparatus, gas-operated