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Priority claimed from DE19732350829external-prioritypatent/DE2350829A1/de
Application filed by Schneider Co Optische WerkefiledCriticalSchneider Co Optische Werke
Priority to AT617776ApriorityCriticalpatent/AT345580B/de
Application grantedgrantedCritical
Publication of AT345580BpublicationCriticalpatent/AT345580B/de
Publication of ATA617776ApublicationCriticalpatent/ATA617776A/de