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Publication of FR419472ApublicationCriticalpatent/FR419472A/fr
B41F31/02—Ducts, containers, supply or metering devices
B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices
FR419472D1909-08-201910-08-19Perfectionnements au réglage du débit de la couleur, de l'encre ou autre, dans les machines à imprimer
ExpiredFR419472A
(fr)
Adjonction à une machine à écrire d'un mécanisme permettant d'obtenir automatiquement, simultanément et sans arrets une double copie de tous les écrits de cette machine