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Pre-qualifying call-back service
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Patent number 6,408,062
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Issue date Jun 18, 2002
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InterVoice Limited Partnership
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Ellis K. Cave
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Repetitive interval timing
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Patent number 6,314,524
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Issue date Nov 6, 2001
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InterVoice Limited Partnership
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Ellis K. Cave
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G06 - COMPUTING CALCULATING COUNTING
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Irregular interval timing
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Patent number 6,232,808
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Issue date May 15, 2001
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InterVoice Limited Partnership
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Ellis K. Cave
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G06 - COMPUTING CALCULATING COUNTING
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Switchless call processing
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Patent number 6,175,562
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Issue date Jan 16, 2001
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InterVoice Limited Partnership
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Ellis K. Cave
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Casual agent pool
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Patent number 5,898,767
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Issue date Apr 27, 1999
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InterVoice Limited Partnership
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Ellis K. Cave
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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