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Application filed by Hans J Trott, Rudolf Feyser, Ralf Neuendorff, Heino HofmannfiledCriticalHans J Trott
Priority to DD19408176ApriorityCriticalpatent/DD126503B1/en
Publication of DD126503A1publicationCriticalpatent/DD126503A1/en
Publication of DD126503B1publicationCriticalpatent/DD126503B1/en