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PCE
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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)