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Frequency tracking arrangements
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Patent number 6,114,902
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Issue date Sep 5, 2000
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Mitel Semiconductor Limited
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Trevor P Beatson
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H03 - BASIC ELECTRONIC CIRCUITRY
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Active filter stack
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Patent number 5,912,587
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Issue date Jun 15, 1999
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Mitel Semiconductor Limited
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Nicholas Mihailovits
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H03 - BASIC ELECTRONIC CIRCUITRY
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Folded active filter
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Patent number 5,847,605
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Issue date Dec 8, 1998
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Plessey SemiConductors Limited
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Nicholas Mihailovits
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H03 - BASIC ELECTRONIC CIRCUITRY
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LAN equalizer
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Patent number 5,793,264
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Issue date Aug 11, 1998
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Plessey Semiconductor Limited
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Craig M. Taylor
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H04 - ELECTRIC COMMUNICATION TECHNIQUE