CPC Subgroup
H01M 50/152 for cells having curved cross-section, e.g. round or elliptic (H01M50/15, H01M50/153 take precedence)
Full Title
Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells > Primary casings; Jackets or wrappings > Lids or covers > characterised by their shape > for cells having curved cross-section, e.g. round or elliptic (H01M50/15, H01M50/153 take precedence)