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David Clark Oberto
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Broomfield, CO, US
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last 30 patents
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Patent Grant
Method and system for availing participants in a special number cal...
Patent number
7,251,312
Issue date
Jul 31, 2007
Intrado Inc.
Linda Kaye D'Evelyn
H04 - ELECTRIC COMMUNICATION TECHNIQUE
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last 30 patents
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Patent Application
Method and system for availing participants in a special number cal...
Publication number
20050053209
Publication date
Mar 10, 2005
Linda Kaye D'Evelyn
H04 - ELECTRIC COMMUNICATION TECHNIQUE