David A. Roberts

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Suffolk, GB

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Patents Grantslast 30 patents

Information Patent Grant
Data communications
- Patent number 7,233,997
- Issue date Jun 19, 2007
- British Telecommunications plc
- Philip C. Leveridge
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
User authentication in a communications network
- Patent number 6,574,730
- Issue date Jun 3, 2003
- British Telecommunications plc
- Robert Andrew Bissell
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Personal identification systems
- Patent number 5,606,614
- Issue date Feb 25, 1997
- British Telecommunications public limited company
- Patrick S. Brady
- G06 - COMPUTING CALCULATING COUNTING