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Filing date
Publication date
Application filed by Jiri Frydrych, Antonin PanfiledCriticalJiri Frydrych
Priority to CS883692ApriorityCriticalpatent/CS266642B1/en
Publication of CS369288A1publicationCriticalpatent/CS369288A1/en
Publication of CS266642B1publicationCriticalpatent/CS266642B1/en