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| Number | Title | Issue Date |
| 5049804 | Universal battery charging system and a method A universal battery charger and recharger for electric batteries having different charging characteristics. The battery charger includes a microprocessor receiving inputs from current, voltage and temperature sensors for controlling the battery charging p... | 09/17/1991 |
| 4843299 | Universal battery charging system and a method A universal battery charger and recharger for electric batteries having different charging characteristics. The battery charger includes a microprocessor receiving inputs from current, voltage and temperature sensors for controlling the battery charging p... | 06/27/1989 |
