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Application filed by Μαγδαληνη ΡαιζερfiledCriticalΜαγδαληνη Ραιζερ
Priority to GR510112795ApriorityCriticalpatent/GR12795B/en
Publication of GR12795BpublicationCriticalpatent/GR12795B/en
GR510112795A1951-01-081951-01-08
METHOD OF PRINTING AND LITHOGRAPHY OR POLYGRAPHY OF BOARDINGS INTENDED FOR THE LEARNING OF LETTERS AND NUMBERS.
GR12795B
(en)