David M. Leonard

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West Chester, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for usage estimation and prediction in two-way...
- Patent number 8,001,276
- Issue date Aug 16, 2011
- TVWorks, LLC
- Raymond Drewry
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of maintaining broadcast data stream
- Patent number 7,797,418
- Issue date Sep 14, 2010
- TVWorks, LLC
- Raymond Drewry
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Method and Apparatus for Usage Estimation and Prediction in Two-Way...
- Publication number 20110282992
- Publication date Nov 17, 2011
- TVWorks, LLC
- Raymond Drewry
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and Apparatus for Usage Estimation and Prediction in Two-Way...
- Publication number 20100312862
- Publication date Dec 9, 2010
- TVWorks, LLC
- Raymond Drewry
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method and apparatus for usage estimation and prediction in two-way...
- Publication number 20040030760
- Publication date Feb 12, 2004
- Raymond Drewry
- H04 - ELECTRIC COMMUNICATION TECHNIQUE