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Application filed by Koudelka Karel, Nykl Jan, Smerda FrantisekfiledCriticalKoudelka Karel
Priority to CS872868ApriorityCriticalpatent/CS265086B1/en
Publication of CS286887A1publicationCriticalpatent/CS286887A1/en
Publication of CS265086B1publicationCriticalpatent/CS265086B1/en