Henricus F. A. De Leeuw

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Eindhoven, NL

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Patents Grantslast 30 patents

Information Patent Grant
Electroscopic picture display device having selective display of lo...
- Patent number 4,740,785
- Issue date Apr 26, 1988
- U.S. Philips Corp.
- Martinus V. C. Stroomer
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Electroscopic picture display arrangement
- Patent number 4,725,832
- Issue date Feb 16, 1988
- U.S. Philips Corporation
- Jean H. J. Lorteije
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS