David P. Roe

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Durham, GB

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Patents Grantslast 30 patents

Information Patent Grant
Determining the location of an incident affecting traffic
- Patent number 8,849,561
- Issue date Sep 30, 2014
- International Business Machines Corporation
- David R. Bell
- G01 - MEASURING TESTING
Information Patent Grant
Character graphics color display system
- Patent number 4,217,577
- Issue date Aug 12, 1980
- International Business Machines Corporation
- David Roe
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents

Information Patent Application
DETERMINING THE LOCATION OF AN INCIDENT AFFECTING TRAFFIC
- Publication number 20140195142
- Publication date Jul 10, 2014
- International Business Machines Corporation
- David R. Bell
- G08 - SIGNALLING