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Patent applications and USPTO patent grants for Rice; David Reagan.The latest application filed is for "system and method for testing enhanced 911 signalling over a digital loop carrier trunk".
Patent | Date |
---|---|
System and method for testing enhanced 911 signalling over a digital loop carrier trunk Grant 6,792,080 - Imperato , et al. September 14, 2 | 2004-09-14 |
Voice frequency data enhancement method Grant 6,724,780 - Bhuyan , et al. April 20, 2 | 2004-04-20 |
Higher speed digital loop carrier transmission system Grant 5,999,582 - Rice December 7, 1 | 1999-12-07 |
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