Ling Elizabeth Xu

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Saratoga, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Architecture for web-based on-line-off-line digital certificate aut...
- Patent number 6,430,688
- Issue date Aug 6, 2002
- International Business Machines Corporation
- Ulrich W. Kohl
- H04 - ELECTRIC COMMUNICATION TECHNIQUE