Robertus Laurentius Clemens De Vaan

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Eindhoven, NL

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Patents Grantslast 30 patents

Information Patent Grant
Low-pressure sodium vapor discharge lamp
- Patent number 4,277,717
- Issue date Jul 7, 1981
- U.S. Philips Corporation
- Willem Van Benthem
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electric device provided with a switch which is designed as a disch...
- Patent number 4,260,934
- Issue date Apr 7, 1981
- U.S. Philips Corporation
- Gijsbert Kuus
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Device for improving the efficiency of a low-pressure sodium vapor...
- Patent number 4,112,331
- Issue date Sep 5, 1978
- U.S. Philips Corporation
- Thomas Geert Verbeek
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
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- Publication number 20070033634
- Publication date Feb 8, 2007
- Koninklijke Philips Electronics N.V.
- Nathalie Dorothee Pieternel Leurs
- H04 - ELECTRIC COMMUNICATION TECHNIQUE