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Power systems to provide uninterruptible electrical power to communications and other critical equipment, namely rectifiers to convert AC to DC voltage to charge backup batteries in uninterruptible power supplies and supply power to communications and electronic/electrical equipment; battery chargers; portable battery monitors used to test and monitor batteries in uninterruptible power supplies; microprocessor-based control and supervisory equipment to control and monitor operation of uninterruptible power supplies and to permit remote monitoring of uninterruptible power supplies; and software for remote monitoring of uninterruptible power supplies
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