Francis J. De Keyzer

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Bornem, BE

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Patents Grantslast 30 patents

Information Patent Grant
Photographic exposure apparatus including a means for the relative...
- Patent number 4,897,689
- Issue date Jan 30, 1990
- Agfa-Gevaert, N.V.
- Francis J. De Keyzer
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY