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Application filed by Jozef Tyukos, Julius Schaeffer, Vojtech Ing Bohus, Albin Ing LenzfiledCriticalJozef Tyukos
Priority to CS833946ApriorityCriticalpatent/CS232635B1/en
Publication of CS394683A1publicationCriticalpatent/CS394683A1/en
Publication of CS232635B1publicationCriticalpatent/CS232635B1/en