Leo Modest Sprengers

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Eindhoven, NL

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Patents Grantslast 30 patents

Information Patent Grant
Low-pressure sodium vapor discharge lamp with protective glass laye...
- Patent number 4,783,612
- Issue date Nov 8, 1988
- U.S. Philips Corp.
- Leo M. Sprengers
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Arrangement including a metal vapor discharge tube provided with at...
- Patent number 4,636,691
- Issue date Jan 13, 1987
- U.S. Philips Corporation
- Rolf E. de Man
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Low-pressure sodium vapor discharge lamp
- Patent number 4,441,045
- Issue date Apr 3, 1984
- U.S. Philips Corporation
- Leo M. Sprengers
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Discharge tube having two internal electrodes
- Patent number 3,956,656
- Issue date May 11, 1976
- U.S. Philips Corporation
- Leo Modest Sprengers
- H01 - BASIC ELECTRIC ELEMENTS