Heating elements; Gas burners; Spark igniters for gas appliances; Ignition systems comprised of a gas supply tube with a nozzle and an electrical igniter to create a flame at the nozzle for industrial applications, namely, for igniting waste gases being discharged from industrial stacks and for igniting gas-fired boilers; Commercial and industrial cookware, namely gas and electric boilers, gas and electric broilers, gas and electric roasters, gas and electric braising pans; Hot water heaters