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Application filed by Companie Generale De PhonohgrafiledCriticalCompanie Generale De Phonohgra
Publication of CH62598ApublicationCriticalpatent/CH62598A/fr
CH62598A1912-09-031912-09-03Appareil perfectionné de projections cinématographiques produisant lui-même la lumière nécessaire pour la projection
CH62598A
(fr)