7 Advanced welding systems in the nature of electric welding machines; electric arc welding machines; automated welding machines and systems in the nature of electric welding machines; automated machine tools and automated equipment, namely, lathes, machine tools for welding, electric arc welding machines, welding torches, metal welding saws and cutters; integrated welding systems comprised primarily of electric welding machines and also featuring integrated controllers, equipment, and weld fixtures specially adapted for electric welding machines; precision weld holding fixtures in the nature of machine parts for electric welding machines, namely, electric linear seam welders, weld lathes, manipulators, gantries, positioners, turn tables, turning rolls, weld chambers, roll planishers, tracks and carriages, and custom designed equipment for welding; auxiliary power units for supplying electrical power; high frequency arc starters in the nature of starters for electric arc welding machines; specialized welding torches and weld heads in the nature of electric welding machine parts