Matthias Porger

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Koln, DE

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Patents Grantslast 30 patents

Information Patent Grant
Color photographic developer concentrate
- Patent number 6,468,724
- Issue date Oct 22, 2002
- Agfa-Gevaert
- Gustav Tappe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Colour photographic developer concentrate
- Publication number 20010036605
- Publication date Nov 1, 2001
- Gustav Tappe
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY