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Application filed by Josef Ing Zubr, Augustin Ing Kohout, Jiri PlasilfiledCriticalJosef Ing Zubr
Priority to CS885168ApriorityCriticalpatent/CS269303B1/en
Publication of CS516888A1publicationCriticalpatent/CS516888A1/en
Publication of CS269303B1publicationCriticalpatent/CS269303B1/en