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Application filed by Vincenzo Barra, Giovanni BarrafiledCriticalVincenzo Barra
Publication of BE476328ApublicationCriticalpatent/BE476328A/fr
G03C1/46—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein having more than one photosensitive layer
Landscapes
Chemical & Material Sciences
(AREA)
Chemical Kinetics & Catalysis
(AREA)
Engineering & Computer Science
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Materials Engineering
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Physics & Mathematics
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General Physics & Mathematics
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BE476328A1943-05-111947-09-26Procédé rendant infalsifiables les photographies et écritures surtous documents d'identité ou autres
BE476328A
(fr)