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S-band universal terminal
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Patent number D940708
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Issue date Jan 11, 2022
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Hughes Network Systems, LLC
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Graham Avis
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D14 - Recording, communication, or information retrieval equipment
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Digital synthesizer
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Patent number 6,449,317
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Issue date Sep 10, 2002
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InterDigital Technology Corporation
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David Norton Critchlow
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Telephone handset
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Patent number D440953
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Issue date Apr 24, 2001
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Hughes Electronics Corporation
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Mohammed Hassan Omran
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D14 - Recording, communication, or information retrieval equipment
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Digital synthesizer
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Patent number 6,078,629
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Issue date Jun 20, 2000
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InterDigital Technology Corporation
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David Norton Critchlow
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Automatic adaptive equalizer
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Patent number 5,168,507
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Issue date Dec 1, 1992
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International Mobile Machines Corporation
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David N. Critchlow
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Frequency synthesizer circuit
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Patent number 5,159,705
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Issue date Oct 27, 1992
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International Mobile Machines Corporation
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David N. Critchlow
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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