TRACEWELL ELECTRONICS, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6493243 Redundant power system and power supply thereforExpiredJan 25, 02Dec 10, 02[H02M, H02J]
6359794 Battery backup power supplyExpiredJul 19, 00Mar 19, 02[H02M, H02J]
5757172 Temperature and current dependent regulated voltage sourceExpiredMar 27, 97May 26, 98[G05F]
4914396 PWM waveform generatorExpiredSep 21, 87Apr 03, 90[H03B, H03K, H03L]
4383293 Isolated DC current sense circuitExpiredNov 16, 81May 10, 83[H02M]

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