Wilhelmus J. Christis

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Eindhoven, NL

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus using teletext to provide channel identification informat...
- Patent number 4,894,714
- Issue date Jan 16, 1990
- U.S. Philips Corporation
- Wilhelmus J. Christis
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Teletext signal processing circuit for a teletext receiver
- Patent number 4,697,046
- Issue date Sep 29, 1987
- U.S. Philips Corporation
- Michael P. W. Geerings
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Error correction circuit using character probability
- Patent number 4,349,904
- Issue date Sep 14, 1982
- U.S. Philips Corporation
- Peter J. H. Janssen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Television receiver having a controllable sound suppression filter
- Patent number 4,219,849
- Issue date Aug 26, 1980
- U.S. Philips Corporation
- Peter J. H. Janssen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE