Dieter Wyrsch

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Marly, CH

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Patents Grantslast 30 patents

Information Patent Grant
Process for the production of negative color images by the silver d...
- Patent number 4,374,914
- Issue date Feb 22, 1983
- Ciba-Geigy Ltd.
- Herbert Mollet
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Process for production of masked positive color images by the silve...
- Patent number 4,368,256
- Issue date Jan 11, 1983
- Ciba-Geigy AG
- Herbert Mollet
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY