Gerda J. F. Smets

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The Hague, NL

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Patents Grantslast 30 patents

Information Patent Grant
Method of causing an observer to get a three-dimensional impression...
- Patent number 4,757,380
- Issue date Jul 12, 1988
- Technische Hogeschool Delft
- Gerda J. F. Smets
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS