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Application filed by Wolfram Kielhorn, Sigfried GeisslerfiledCriticalWolfram Kielhorn
Priority to DD19465176ApriorityCriticalpatent/DD127911B1/de
Priority to CS573577Aprioritypatent/CS202171B1/cs
Publication of DD127911A1publicationCriticalpatent/DD127911A1/de
Publication of DD127911B1publicationCriticalpatent/DD127911B1/de