ORION INVESTMENT CORPORATION

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5235634 Apparatus and method for activating an inbound telemetry deviceExpiredDec 14, 90Aug 10, 93[H04M]
5204896 Outbound telemetry deviceExpiredMay 05, 92Apr 20, 93[H04M]
5202916 Signal proessing circuit for use in telemetry devicesExpiredAug 10, 90Apr 13, 93[H04M]
4839917 Universal line status monitoring and response systemExpiredOct 29, 87Jun 13, 89[H04M, G08B]
4710919 Multiplex system for automatic meter readingExpiredOct 21, 83Dec 01, 87[G08B, H04J]
4578536 Centerpoint automatic meter reading systemExpiredOct 19, 83Mar 25, 86[H04M]
4540849 Meter interface unit for utility meter reading systemExpiredJun 08, 83Sep 10, 85[H04M]
4498220 Method for pre-expanding heat exchanger tubeExpiredAug 23, 82Feb 12, 85[B23P, B21D]

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