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David L. Yarbrough
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Reston, VA, US
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last 30 patents
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Patent Grant
Controllable telecommunications switch reporting compatible with vo...
Patent number
7,388,947
Issue date
Jun 17, 2008
Federal Bureau of Investigation, The United States of America as represented...
David B. Smith
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
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Patent Application
Controllable telecommunications switch reporting compatible with vo...
Publication number
20040179513
Publication date
Sep 16, 2004
Government of the United States of America Federal Bureau of Investigation
David B. Smith
H04 - ELECTRIC COMMUNICATION TECHNIQUE