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Data optimized codec
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Patent number 6,356,593
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Issue date Mar 12, 2002
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Lucent Technologies Inc.
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Nuri Ruhi Dagedeviren
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Battery feed circuit
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Patent number 5,659,610
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Issue date Aug 19, 1997
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Lucent Technologies Inc.
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Ian Andrew Schorr
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Telephone ringing detector
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Patent number 4,939,775
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Issue date Jul 3, 1990
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AT&T Bell Laboratories
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Kenneth A. Houck
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Electronic inductor
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Patent number 4,896,093
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Issue date Jan 23, 1990
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American Telephone and Telegraph Company
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Dewayne A. Spires
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H03 - BASIC ELECTRONIC CIRCUITRY
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Relay driver
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Patent number 4,510,550
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Issue date Apr 9, 1985
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AT&T Bell Laboratories
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Dewayne A. Spires
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H03 - BASIC ELECTRONIC CIRCUITRY
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Battery feed circuit
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Patent number 4,476,350
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Issue date Oct 9, 1984
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Bell Telephone Laboratories, Incorporated
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Denis W. Aull
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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