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Publication of FR714749ApublicationCriticalpatent/FR714749A/fr
B41B—MACHINES OR ACCESSORIES FOR MAKING, SETTING, OR DISTRIBUTING TYPE; TYPE; PHOTOGRAPHIC OR PHOTOELECTRIC COMPOSING DEVICES
B41B11/00—Details of, or accessories for, machines for mechanical composition using matrices for individual characters which are selected and assembled for type casting or moulding
FR714749D1930-04-301931-04-03Procédé et appareil pour nettoyer les matrices des machines de composition typographique
ExpiredFR714749A
(fr)