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Application filed by Josef Holda, Jaromir Ing Kosina, Ludek Sterba, Emil SmidfiledCriticalJosef Holda
Priority to CS872616ApriorityCriticalpatent/CS262063B1/en
Publication of CS261687A1publicationCriticalpatent/CS261687A1/en
Publication of CS262063B1publicationCriticalpatent/CS262063B1/en