ABB METERING SYSTEMS LIMITED

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5194860 Radio telemetry systems with channel selectionExpiredNov 15, 90Mar 16, 93[G08C]
5099195 Electronic device for measuring electrical power supply to a loadExpiredDec 14, 90Mar 24, 92[G01R]
4254403 Systems for transmitting information in an alternating current electricity supply systemExpiredAug 06, 79Mar 03, 81[H04B]

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