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Application filed by Μαγδαληνη ΡαιζερfiledCriticalΜαγδαληνη Ραιζερ
Priority to GR510112795ApriorityCriticalpatent/GR12795B/el
Publication of GR12795BpublicationCriticalpatent/GR12795B/el
GR510112795A1951-01-081951-01-08Μεθοδος εκτυπωσεως και λιθογραφησεως η πολυγραφησεως χαρτονιων προοριζομενων δια την εκμαθησιν γραμματων και αριθμων.
GR12795B
(el)