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Application filed by Perner Bohumil, Kvapil Jiri, Kvapil Josef, Miroslav Holas, Karel JanakfiledCriticalPerner Bohumil
Priority to CS846073ApriorityCriticalpatent/CS248913B1/en
Publication of CS607384A1publicationCriticalpatent/CS607384A1/en
Publication of CS248913B1publicationCriticalpatent/CS248913B1/en