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Application filed by Prochazka Josef, Frantisek Ing Kuncl, Josef Kotouc, Zdenek KonselfiledCriticalProchazka Josef
Priority to CS833808ApriorityCriticalpatent/CS239627B1/en
Publication of CS380883A1publicationCriticalpatent/CS380883A1/en
Publication of CS239627B1publicationCriticalpatent/CS239627B1/en