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Paul-Henri Voisin
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San Mateo, CA, US
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last 30 patents
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Patent Grant
Method of using diazotype photographic materials with preexposure t...
Patent number
4,508,808
Issue date
Apr 2, 1985
Xidex Corporation
Wai-Hon Lee
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
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Patent Grant
Duplication-proof photographic film
Patent number
4,152,156
Issue date
May 1, 1979
Xidex Corporation
Paul-Henri Voisin
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY