Robert A. Dougherty

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Ozona, FL, US

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Patents Grantslast 30 patents

Information Patent Grant
Co-channel transmission of program signals and ancillary signals
- Patent number 5,737,025
- Issue date Apr 7, 1998
- Nielsen Media Research, Inc.
- Robert A. Dougherty
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Video and data co-channel communication system
- Patent number 5,737,026
- Issue date Apr 7, 1998
- Nielsen Media Research, Inc.
- Daozheng Lu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus and method for injecting an ancillary signal into a low e...
- Patent number 5,629,739
- Issue date May 13, 1997
- A. C. Nielsen Company
- Robert A. Dougherty
- H04 - ELECTRIC COMMUNICATION TECHNIQUE