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Digital communications systems
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Patent number 5,297,164
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Issue date Mar 22, 1994
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Shaye Communications, Limited
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David J. McCabe
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Telephone handset
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Patent number D338199
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Issue date Aug 10, 1993
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Shaye Communications Limited
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Rodger J. Andrew
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D14 - Recording, communication, or information retrieval equipment
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Telecommunications system
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Patent number 5,208,812
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Issue date May 4, 1993
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British Telecommunications public limited company
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Michael T. Dudek
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Waveform encoder
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Patent number 4,996,696
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Issue date Feb 26, 1991
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Shaye Communications Limited
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David J. McCabe
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H03 - BASIC ELECTRONIC CIRCUITRY