Robert Derrick Gourdine

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Naperville, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Telephone terminal apparatus and method
- Patent number 6,940,968
- Issue date Sep 6, 2005
- SBC Properties, L.P.
- Marc Ira Lipton
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telephone terminal apparatus and method
- Patent number 5,991,398
- Issue date Nov 23, 1999
- Ameritech Corporation
- Marc Ira Lipton
- H04 - ELECTRIC COMMUNICATION TECHNIQUE