David M. Walters

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Waterloo, CA

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Patents Grantslast 30 patents

Information Patent Grant
Hand-held electronic device with a keyboard optimized for use with...
- Patent number 6,919,879
- Issue date Jul 19, 2005
- Research In Motion Limited
- Jason T. Griffin
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Hand-held electronic device with a keyboard optimized for use with...
- Publication number 20030020692
- Publication date Jan 30, 2003
- Jason T. Griffin
- G06 - COMPUTING CALCULATING COUNTING