DIFF Subgroup
B23K 9/1276 Full Title
Arc welding or cutting > Automatic feeding or moving of electrodes or work for spot or seam welding or cutting > Means for tracking lines during arc welding or cutting
B23K 9/1276 Arc welding or cutting > Automatic feeding or moving of electrodes or work for spot or seam welding or cutting > Means for tracking lines during arc welding or cutting