John Derek Lewis

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Brentwood, EN

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Patents Grantslast 30 patents

Information Patent Grant
Method of preparing a monosize silver halide emulsion involving Ost...
- Patent number 4,067,739
- Issue date Jan 10, 1978
- Ciba-Geigy AG
- John Derek Lewis
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY