Electric welding machines; machines for welding (electric); metal welding machines (electric); welding apparatus, electric (machines); welding machines, electric

Apparatus for electric welding; apparatus for the welding of materials; arc welding apparatus (electric, other than machines); electric arc welding apparatus; electric arc welding apparatus; electric welding apparatus; electric welding guns; electric welding instruments; electric welding torches; electrical arc welding apparatus; electrical arc welding heads; electrical control apparatus for electric welding machines; electrical control apparatus for use in welding processes; electrical welding apparatus; electrical welding instruments; metal welding apparatus (electric); non-autogenous electric welding apparatus; power sources for arc welding; power sources for electric arc welding; power sources for welding apparatus; welding apparatus, electric; welding apparatus, electric (other than machines); welding torches (electric)