David L. Blanchard

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Lake Zurich, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
High definition television signal format converter
- Patent number 5,289,277
- Issue date Feb 22, 1994
- Zenith Electronics Corp.
- David L. Blanchard
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Adaptive comb filter and interpolator
- Patent number 4,646,133
- Issue date Feb 24, 1987
- Zenith Electronics Corporation
- David L. Blanchard
- H04 - ELECTRIC COMMUNICATION TECHNIQUE