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Priority claimed from JP44077994Aexternal-prioritypatent/JPS4830570B1/ja
Priority claimed from DK472870Aexternal-prioritypatent/DK129222B/en
Application filed by Ricoh KkfiledCriticalRicoh Kk
Publication of DK129975BpublicationCriticalpatent/DK129975B/en
Application grantedgrantedCritical
Publication of DK129975CpublicationCriticalpatent/DK129975C/da