David Lee

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Columbus, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
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- Patent number 9,118,691
- Issue date Aug 25, 2015
- AT&T Intellectual Property I, L.P.
- Kadangode K. Ramankrishnan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
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- Patent number 8,510,562
- Issue date Aug 13, 2013
- AT&T Intellectual Property I, L.P.
- Kadangode K. Ramakrishnan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

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- Publication number 20130332533
- Publication date Dec 12, 2013
- AT&T Intellectual Property I. L.P.
- Kadangode K. Ramankrishnan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
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- Publication number 20110231661
- Publication date Sep 22, 2011
- AT&T Intellectual Property I, L.P.
- Kadangode K. Ramakrishnan
- H04 - ELECTRIC COMMUNICATION TECHNIQUE