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Application filed by Josef Ing Hason, Frantisek Ing Pliska, Josef Uhlir, Vlastimil VanousfiledCriticalJosef Ing Hason
Priority to CS862051ApriorityCriticalpatent/CS259760B1/cs
Publication of CS205186A1publicationCriticalpatent/CS205186A1/cs
Publication of CS259760B1publicationCriticalpatent/CS259760B1/cs