213725 ⎘
Secondary cells; Manufacture thereof; Lead-acid accumulators; Construction or manufacture Small-sized flat cells or batteries for portable equipment
Sub-classes:SEPARATORS, LEAD ACID BATTERIES, AND METHODS AND SYSTEMS ASSOCIATED THEREWITH
#2Separators, lead acid batteries, and methods and systems associated therewith
#3Thin film solid state lithium ion secondary battery and method of manufacturing the same
#4Thin film solid state lithium ion secondary battery and method of manufacturing the same