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Tracking communications usage time
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Patent number 7,711,350
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Issue date May 4, 2010
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International Business Machines Corporation
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Kulvir S. Bhogal
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Communications network
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Patent number 7,535,853
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Issue date May 19, 2009
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British Telecommunications public limited company
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Robert J Briscoe
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Communications network
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Patent number 7,426,471
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Issue date Sep 16, 2008
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British Telecommunications public limited company
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Robert J Briscoe
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Communications network
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Patent number 7,319,673
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Issue date Jan 15, 2008
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British Telecommunications plc
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Robert J Briscoe
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Mobile phone distribution system
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Patent number 7,058,386
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Issue date Jun 6, 2006
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Telemac Corporation
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Donald Scott McGregor
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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