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Application filed by Dusan Konecny, Ladislav Prokopec, Leopold Vyoral, Jiri Pavlicek, Vladimir Petru, Jaromir TrnenyfiledCriticalDusan Konecny
Priority to CS883079ApriorityCriticalpatent/CS209716B1/cs
Priority to SU807771427Aprioritypatent/SU994519A1/ru
Priority to DD22474880Aprioritypatent/DD156482A3/xx
Publication of CS209716B1publicationCriticalpatent/CS209716B1/cs