Jan Verweel

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Eindhoven, NL

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Patents Grantslast 30 patents

Information Patent Grant
Devices for manufacturing a magnetic quadrupole post-focusing mask
- Patent number 4,513,272
- Issue date Apr 23, 1985
- U.S. Philips Corporation
- Jan Verweel
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Methods of manufacturing a color display tube having a magnetic gua...
- Patent number 4,428,736
- Issue date Jan 31, 1984
- U.S. Philips Corporation
- Jan Verweel
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Cathode-ray tube having a magnetic quadrupole shadow mask
- Patent number 4,339,688
- Issue date Jul 13, 1982
- U.S. Philips Corporation
- Jan Verweel
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Shadow mask having magnetic quadrupoles around each mask aperture
- Patent number 4,135,111
- Issue date Jan 16, 1979
- U.S. Philips Corporation
- Jan Verweel
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Shadow mask each aperture of which is defined by a quadrupolar lens
- Patent number 4,059,781
- Issue date Nov 22, 1977
- U.S. Philips Corporation
- Willem Meijndert VAN Alphen
- H01 - BASIC ELECTRIC ELEMENTS