Johannes H. A. Vasterink

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Almelo, NL

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Patents Grantslast 30 patents

Information Patent Grant
Cathode ray tube with an ion trap including a barrier member
- Patent number 4,749,904
- Issue date Jun 7, 1988
- U.S. Philips Corporation
- Johannes H. A. Vasterink
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electron emission device provided with a reservoir containing mater...
- Patent number 4,736,135
- Issue date Apr 5, 1988
- U.S. Philips Corporation
- Jan Zwier
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Dual-cathode electron emission device
- Patent number 4,717,855
- Issue date Jan 5, 1988
- U.S. Philips Corporation
- Jan Zwier
- H01 - BASIC ELECTRIC ELEMENTS