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Application filed by Alexandre Hostache HenrifiledCriticalAlexandre Hostache Henri
Publication of CH46105ApublicationCriticalpatent/CH46105A/fr
CH46105A1909-05-221909-05-22Installation pour faire apparaître à l'aide de courants électriques, une série de signes formés par des points lumineux
CH46105A
(fr)