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POST und EISENBAHN VERKEHRSWES
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POST und EISENBAHN VERKEHRSWES
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Application filed by POST und EISENBAHN VERKEHRSWESfiledCriticalPOST und EISENBAHN VERKEHRSWES
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Publication of FR423613ApublicationCriticalpatent/FR423613A/fr
Procédé et dispositif pour la ventilation générale, et pour la formation, la transmission, la direction, la diffusion et la distribution des courants d'air
Procédé et dispositif pour l'estampage de perforations-symboles dans les bandes perforées pour l'actionnement des machines à écrire, à composer et fondre les caractères d'imprimerie, ou autres analogues