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Priority to DE19722224613priorityCriticalpatent/DE2224613C3/de
Priority claimed from DE19722224613external-prioritypatent/DE2224613C3/de
Application filedfiledCritical
Priority to DD163348Aprioritypatent/DD96981A1/xx
Publication of DD96981A1publicationCriticalpatent/DD96981A1/xx