DIFF Subgroup
B23K 31/027 Full Title
Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups B23K1/00 - B23K28/00 > relating to soldering or welding
B23K 31/027 Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups B23K1/00 - B23K28/00 > relating to soldering or welding