Wilhelmus Jacobus Witteman

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Geldrop, NL

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Patents Grantslast 30 patents

Information Patent Grant
Gaseous electric discharge tube having a coaxial, hollow cathode st...
- Patent number 3,934,167
- Issue date Jan 20, 1976
- U.S. Philips Corporation
- Gijsbert Johannes Ponsen
- H01 - BASIC ELECTRIC ELEMENTS