DIFF Subgroup
B23K 37/0258 Full Title
Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass > Carriages for supporting the welding or cutting element
B23K 37/0258 Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass > Carriages for supporting the welding or cutting element