Walter Heierli

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Marly, CH

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Patents Grantslast 30 patents

Information Patent Grant
Color photographic recording material
- Patent number 4,026,709
- Issue date May 31, 1977
- Ciba-Geigy AG
- Bernhard Piller
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Color photographic recording material
- Patent number 3,984,432
- Issue date Oct 5, 1976
- Ciba-Geigy AG
- Bernhard Piller
- C07 - ORGANIC CHEMISTRY