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Application filed by Hainz Petr, Vaclav Ing KopeckyfiledCriticalHainz Petr
Priority to CS828910ApriorityCriticalpatent/CS238958B1/en
Publication of CS891082A1publicationCriticalpatent/CS891082A1/en
Publication of CS238958B1publicationCriticalpatent/CS238958B1/en