Geoffrey Ernest Ficken

Follow

Person

Ilford, EN

People

Patents Grantslast 30 patents

Information Patent Grant
Spectral sensitization of photographic material with natural colloi...
- Patent number 4,040,825
- Issue date Aug 9, 1977
- Ciba-Geigy AG
- Rolf Steiger
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY