ACCUMULATORENFABRIK SONNENSCHEIN, GMBH

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5468575 Maintenance-free high capacity lead battery or accumulatorExpiredDec 17, 93Nov 21, 95[H01M]
4894300 Sealed maintenance-free lead-acid storage batteryExpiredAug 19, 88Jan 16, 90[H07M]
4725404 Lead calcium alloy and process of making sameExpiredJun 11, 86Feb 16, 88[C22C]
4672166 Control circuit for the current of a welding transformerExpiredJan 30, 86Jun 09, 87[B23K]

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